| Nominal Species (n = 1402) | Present allocation (n = 1182) | Ref. |
|---|---|---|
| Tetragonopterus abramis Jenyns, 1842 | Astyanax abramis | 38376 |
| Astyanax abramoides Eigenmann, 1909 | Jupiaba abramoides | 12225 |
| Hyphessobrycon acaciae García-Alzate, Román-Valencia & Prada-Pedreros, 2010 | Hyphessobrycon acaciae | 85795 |
| Deuterodon acanthogaster Eigenmann, 1911 | Jupiaba acanthogaster | 38376 |
| Astyanax acatlanensis Schmitter-Soto, 2017 | Astyanax acatlanensis | 118583 |
| Oligosarcus acutirostris Menezes, 1987 | Oligosarcus acutirostris | 27925 |
| Acestrocephalus acutus Menezes, 2006 | Acestrocephalus acutus | 75890 |
| Phallobrycon adenacanthus Menezes, Ferreira & Netto-Ferreira, 2009 | Phallobrycon adenacanthus | 81937 |
| Tetragonopterus aeneus Günther, 1860 | Astyanax aeneus | 30499 |
| Tetragonopterus aeneus (non Günther, 1860) | Psalidodon fasciatus | 47985 |
| Tetragonopterus aeneus Hensel, 1870 | Astyanax henseli | 38376 |
| Astyanax aeneus costaricensis Meek, 1914 | Astyanax nicaraguensis | 118583 |
| Astyanax aeneus costaricensis Meek, 1914 | Psalidodon fasciatus | 38376 |
| Hemigrammus aereus Géry, 1959 | Hemigrammus aereus | 38376 |
| Anacyrtus affinis Günther, 1868 | Roeboides affinis | 27116 |
| Aphyocharax affinis Ahl, 1923 | Aphyocharax anisitsi | 38382 |
| Creagrutus affinis Steindachner, 1880 | Creagrutus affinis | 28667 |
| Moenkhausia affinis Steindachner, 1915 | Moenkhausia affinis | 38376 |
| Pseudochalceus affinis Steindachner, 1908 | Hollandichthys multifasciatus | 38376 |
| Pseudocheirodon affinis Meek & Hildebrand, 1916 | Pseudocheirodon arnoldi | 35665 |
| Chirodon agassizii Steindachner, 1882 | Aphyocharax agassizii | 38382 |
| Bryconamericus agna Azpelicueta & Almirón, 2001 | Bryconamericus agna | 38376 |
| Moenkhausia agnesae Géry, 1965 | Moenkhausia agnesae | 38376 |
| Hyphessobrycon agulha Fowler, 1913 | Hyphessobrycon agulha | 598 |
| Astyanax ajuricaba Marinho & Lima, 2009 | Jupiaba ajuricaba | 81201 |
| Tetragonopterus akamai Araujo & Lucinda, 2014 | Tetragonopterus anostomus | 96868 |
| Astyanax albeolus Eigenmann, 1908 | Psalidodon fasciatus | 38376 |
| Stevardia albipinnis Gill, 1858 | Corynopoma riisei | 598 |
| Hyphessobrycon albolineatus Fernández-Yépez, 1950 | Hyphessobrycon albolineatus | 123477 |
| Parastremma album Dahl, 1960 | Parastremma album | 38501 |
| Chirodon alburnus Günther, 1869 | Aphyocharax alburnus | 38382 |
| Paragoniates alburnus Steindachner, 1876 | Paragoniates alburnus | 598 |
| Tetragonopterus alburnus Hensel, 1870 | Diapoma alburnum | 38376 |
| Cyanocharax alegretensis Malabarba & Weitzman, 2003 | Diapoma alegretense | 55830 |
| Bryconamericus alfredae Eigenmann, 1927 | Bryconamericus alfredae | 6329 |
| Stevardia aliata Eigenmann, 1914 | Corynopoma riisei | 33021 |
| Prodontocharax alleni Böhlke, 1953 | Prodontocharax alleni | 6329 |
| Tetragonopterus alleni Eigenmann & McAtee, 1907 | Ctenobrycon alleni | 38376 |
| Tetragonopterus alosa Günther, 1876 | Astyanax maximus | 38376 |
| Bryconamericus alpha Eigenmann, 1914 | Bryconamericus alpha | 38376 |
| Bryconamericus alpha (non Eigenmann, 1914) | Bryconamericus caucanus | 38376 |
| Astyanax altiparanae Garutti & Britski, 2000 | Astyanax altiparanae | 38376 |
| Rhoadsia altipinna Fowler, 1911 | Rhoadsia altipinna | 38501 |
| Bergia altipinnis Steindachner, 1891 | Pseudocorynopoma doriae | 38597 |
| Erythrocharax altipinnis Netto-Ferreira, Birindelli, de Sousa, Mariguela & Oliveira, 2013 | Erythrocharax altipinnis | 93035 |
| Hyphessobrycon amandae Géry & Uj, 1987 | Hyphessobrycon amandae | 27925 |
| Hyphessobrycon amapaensis Zarske & Géry, 1998 | Hyphessobrycon amapaensis | 34075 |
| Hyphessobrycon amaronensis García-Alzate, Román-Valencia & Taphorn, 2010 | Hyphessobrycon amaronensis | 84248 |
| Bleptonema amazonae Eigenmann, 1914 | Prionobrama filigera | 38376 |
| Anacyrtus amazonum Günther, 1868 | Cynopotamus amazonum | 35496 |
| Deuterodon amniculus Lucena & Lucena, 1992 | Deuterodon langei | 38376 |
| Creagrutus amoenus Fowler, 1943 | Creagrutus amoenus | 38376 |
| Oligosarcus amome Almirón, Casciotta, Piálek, Doubnerová, Říčan, 2015 | Oligosarcus amome | 99820 |
| Nematobrycon amphiloxus Eigenmann & Wilson, 1914 | Nematobrycon palmeri | 38376 |
| Astyanax anai Angulo, Santos, López, Langeani & McMahan, 2018 | Astyanax anai | 122421 |
| Aphyocharax analis Nichols, 1915 | Prionobrama filigera | 38376 |
| Hemigrammus analis Durbin, 1909 | Hemigrammus analis | 38376 |
| Piabina analis Eigenmann, 1914 | Piabarchus analis | 38376 |
| Creagrutus anary Fowler, 1913 | Creagrutus anary | 598 |
| Bryconamericus andresoi Román-Valencia, 2003 | Bryconamericus andresoi | 49955 |
| Moenkhausia andrica Reia, Oliveira & Benine, 2021 | Moenkhausia andrica | 124591 |
| Tetragonopterus angustifrons Regan, 1908 | Astyanax angustifrons | 598 |
| Piabina anhembi da Silva & Kaefer, 2003 | Piabina anhembi | 50838 |
| Aphyocharax anisitsi Eigenmann & Kennedy, 1903 | Aphyocharax anisitsi | 38382 |
| Hemigrammus anisitsi Eigenmann, 1907 | Psalidodon anisitsi | 598 |
| Spintherobolus ankoseion Weitzman & Malabarba, 1999 | Spintherobolus ankoseion | 32783 |
| Cheirodon annae McAtee, 1903 | Cheirodon pisciculus | 598 |
| Xiphorhamphus anomalus Steindachner, 1880 | Acestrocephalus anomalus | 36811 |
| Tetragonopterus anostomus Silva & Benine, 2011 | Tetragonopterus anostomus | 87186 |
| Astyanax anterior Eigenmann, 1908 | Jupiaba anterior | 28768 |
| Astyanax anteroides Géry, 1965 | Jupiaba anteroides | 27970 |
| Hemibrycon antioquiae Román-Valencia, Ruiz-C., Taphorn P., Mancera-Rodriguez & García-Alzate, 2013 | Hemibrycon antioquiae | 95113 |
| Anoptichthys antrobius Álvarez, 1946 | Astyanax jordani | 38376 |
| Jupiaba apenima Zanata, 1997 | Jupiaba apenima | 38376 |
| Myxiops aphos Zanata & Akama, 2004 | Deuterodon aphos | 54751 |
| Aphyodite apiaka Esguícero & Castro, 2017 | Aphyodite apiaka | 116757 |
| Phenacogaster apletostigma Lucena & Gama, 2007 | Phenacogaster apletostigma | 75796 |
| Charax apurensis Lucena, 1987 | Charax apurensis | 36811 |
| Tetragonopterus araguaiensis Silva, Melo, Oliveira & Benine, 2013 | Tetragonopterus araguaiensis | 93280 |
| Roeboides araguaito Lucena, 2003 | Roeboides araguaito | 57858 |
| Astyanax aramburui Protogino, Miquelarena & López, 2006 | Astyanax aramburui | 57546 |
| Astyanax argentatus Baird & Girard, 1854 | Astyanax argentatus | 118583 |
| Piabina argentea Reinhardt, 1867 | Piabina argentea | 38376 |
| Hydrocyon argenteum Valenciennes, 1836 | Cynopotamus argenteus | 36811 |
| Oligosarcus argenteus Günther, 1864 | Oligosarcus argenteus | 38376 |
| Tetragonopterus argenteus Cuvier, 1816 | Tetragonopterus argenteus | 124043 |
| Chalcinopelecus argentinus Holmberg, 1891 | Pseudocorynopoma doriae | 38597 |
| Astyanax argyrimarginatus Garutti, 1999 | Astyanax argyrimarginatus | 38376 |
| Hyphessobrycon arianae Uj & Géry, 1989 | Hyphessobrycon arianae | 38376 |
| Priocharax ariel Weitzman & Vari, 1987 | Priocharax ariel | 28825 |
| Bryconamericus arilepis Román-Valencia, Vanegas-Ríos & Ruiz-C., 2008 | Bryconamericus arilepis | 83586 |
| Pristella ariporo Conde-Saldaña, Albornoz-Garzón, García-Melo, Villa-Navarro, Mirande & Lima, 2019 | Pristella ariporo | 128489 |
| Astyanax armandoi Lozano-Vilano & Contreras-Balderas, 1990 | Astyanax aeneus | 76881 |
| Dectobrycon armeniacus Zarske & Géry, 2006 | Dectobrycon armeniacus | 57697 |
| Hemigrammus armstrongi Schultz & Axelrod, 1955 | Hemigrammus rodwayi | 38376 |
| Cheirodon arnoldi Boulenger, 1909 | Pseudocheirodon arnoldi | 33021 |
| Hemigrammus arua Lima, Wosiacki & Ramos, 2009 | Hemigrammus arua | 81198 |
| Serrapinnus aster Malabarba & Jerep, 2014 | Serrapinnus aster | 96959 |
| Astyanax asymmetricus Eigenmann, 1908 | Jupiaba asymmetrica | 27970 |
| Astyanax asymmetricus colombiensis Fowler, 1945 | Jupiaba asymmetrica | 38376 |
| Astyanax atahualpianus Fowler, 1907 | Moenkhausia atahualpiana | 38376 |
| Hemigrammus ataktos Marinho, Dagosta & Birindelli, 2014 | Hemigrammus ataktos | 96858 |
| Tyttocharax atopodus Böhlke, 1958 | Scopaeocharax atopodus | 26282 |
| Deuterodon atracaudata Meek & Hildebrand, 1912 | Gephyrocharax atracaudatus | 33021 |
| Astyanax atratoensis Eigenmann, 1907 | Astyanax atratoensis | 598 |
| Charax atratoensis Eigenmann, 1907 | Cynopotamus atratoensis | 36811 |
| Creagrutus atratus Vari & Harold, 2001 | Creagrutus atratus | 35140 |
| Creagrutus atrisignum Myers, 1927 | Creagrutus atrisignum | 598 |
| Jupiaba atypindi Zanata, 1997 | Jupiaba atypindi | 38376 |
| Pristella aubynei Eigenmann, 1909 | Parapristella aubynei | 38376 |
| Hyphessobrycon auca Almirón, Casciotta, Bechara & Ruíz Díaz, 2004 | Hyphessobrycon auca | 55796 |
| Moenkhausia aurantia Bertaco, Jerep & Carvalho, 2011 | Moenkhausia aurantia | 87319 |
| Astyanax aurocaudatus Eigenmann, 1913 | Astyanax aurocaudatus | 85145 |
| Cheirodon australe Eigenmann, 1928 | Cheirodon australe | 598 |
| Moenkhausia australe (non Eigenmann, 1908) | Moenkhausia sanctaefilomenae | 104871 |
| Moenkhausia australis Eigenmann, 1908 | Moenkhausia australis | |
| Odontostilbe avanhandava Chuctaya, Bührnheim & Malabarba, 2018 | Odontostilbe avanhandava | 128907 |
| Aphyocharax avary Fowler, 1913 | Aphyocharax alburnus | 38382 |
| Charax awa Guimarães, Brito, Ferreira & Ottoni, 2018 | Charax awa | 117313 |
| Aphyocharax axelrodi Travassos, 1959 | Hyphessobrycon axelrodi | 13676 |
| Brittanichthys axelrodi Géry, 1965 | Brittanichthys axelrodi | 598 |
| Cheirodon axelrodi Schultz, 1956 | Paracheirodon axelrodi | 38376 |
| Schultzites axelrodi Géry, 1964 | Schultzites axelrodi | 598 |
| Astyanax bacalarensis Schmitter-Soto, 2017 | Astyanax bacalarensis | 118583 |
| Astyanax bagual Bertaco & Vigo, 2015 | Astyanax bagual | 103251 |
| Tetragonopterus bahiensis Steindachner, 1877 | Astyanax bimaculatus | 38376 |
| Bramocharax baileyi Rosen, 1972 | Astyanax baileyi | 118583 |
| Tetragonopterus bairdii Steindachner, 1882 | Phenacogaster pectinata | 36811 |
| Hyphessobrycon balbus Myers, 1927 | Hyphessobrycon balbus | 598 |
| Mimagoniates barberi Regan, 1907 | Mimagoniates barberi | 30267 |
| Mimagoniates barberi (non Regan, 1907) | Mimagoniates lateralis | 2060 |
| Moenkhausia barbouri Eigenmann, 1908 | Moenkhausia barbouri | 38376 |
| Creagrutus barrigai Vari & Harold, 2001 | Creagrutus barrigai | 35140 |
| Hemigrammus barrigonae Eigenmann & Henn, 1914 | Hemigrammus barrigonae | 38376 |
| Tetragonopterus bartlettii Günther, 1866 | Astyanax bimaculatus | 38376 |
| Bryconamericus baudoensis Fowler, 1944 | Bryconamericus emperador | 38376 |
| Eretmobrycon bayano Fink, 1976 | Eretmobrycon bayano | 123753 |
| Tetragonopterus belizianus Bocourt, 1868 | Astyanax belizianus | 118583 |
| Tetragonopterus bellottii Steindachner, 1882 | Hemigrammus bellottii | 46206 |
| Creagrutus beni Eigenmann, 1911 | Creagrutus beni | 38376 |
| Hemibrycon beni Pearson, 1924 | Hemibrycon beni | 598 |
| Phenacogaster beni Eigenmann, 1911 | Phenacogaster beni | 36811 |
| Piabina beni Pearson, 1924 | Creagrutus pearsoni | 33021 |
| Hyphessobrycon bentosi Durbin, 1908 | Hyphessobrycon bentosi | 13676 |
| Gymnocharacinus bergii Steindachner, 1903 | Gymnocharacinus bergii | 38376 |
| Bryconamericus beta Eigenmann, 1914 | Bryconamericus alpha | 86778 |
| Bryconamericus beta motatanensis Schultz, 1944 | Bryconamericus motatanensis | 26282 |
| Roeboides bicornis Cope, 1870 | Roeboides affinis | 36811 |
| Astyanax bifasciatus Garavello & Sampaio, 2010 | Psalidodon bifasciatus | 85756 |
| Hyphessobrycon bifasciatus Ellis, 1911 | Hyphessobrycon bifasciatus | 38376 |
| Hasemania bilineata Ellis, 1911 | Coptobrycon bilineatus | 46206 |
| Salmo bimaculatus Linnaeus, 1758 | Astyanax bimaculatus | 38376 |
| Astyanax bimaculatus asuncionensis Géry, 1972 | Astyanax asuncionensis | 38376 |
| Astyanax bimaculatus borealis Eigenmann, 1908 | Astyanax bimaculatus | 38376 |
| Astyanax bimaculatus incaicus Tortonese, 1942 | Astyanax bimaculatus | 38376 |
| Astyanax bimaculatus novae (non Eigenmann, 1911) | Astyanax bimaculatus | 38376 |
| Astyanax bimaculatus novae Eigenmann, 1911 | Astyanax novae | 97102 |
| Astyanax bimaculatus paraguayensis Eigenmann, 1921 | Astyanax asuncionensis | 38376 |
| Ceratobranchia binghami Eigenmann, 1927 | Ceratobranchia binghami | 6329 |
| Astyanax biotae Castro & Vari, 2004 | Astyanax biotae | 55832 |
| Cynopotamus bipunctatus Pellegrin, 1909 | Cynopotamus bipunctatus | 36811 |
| Astyanax bipunctialbicaudalis Godoy, 1977 | Moenkhausia intermedia | 38376 |
| Cynopotamus biserialis Garman, 1890 | Roeboides biserialis | 36811 |
| Hemigrammus bleheri Géry & Mahnert, 1986 | Petitella bleheri | 38376 |
| Astyanax bockmanni Vari & Castro, 2007 | Psalidodon bockmanni | 57996 |
| Acestrocephalus boehlkei Menezes, 1977 | Acestrocephalus boehlkei | 6329 |
| Creagrutus boehlkei Géry, 1972 | Creagrutus amoenus | 38376 |
| Thayeria boehlkei Weitzman, 1957 | Thayeria boehlkei | 38376 |
| Tyttocharax boehlkei Géry, 1965 | Tyttocharax cochui | 26646 |
| Ctenocharax bogotensis Regan, 1907 | Grundulus bogotensis | 38376 |
| Poecilia bogotensis Humboldt, 1821 | Grundulus bogotensis | 38376 |
| Pseudochalceus bohlkei Orcés V., 1967 | Pseudochalceus bohlkei | 57697 |
| Creagrutus bolivari Schultz, 1944 | Creagrutus bolivari | 598 |
| Aphyocharacidium bolivianum Géry, 1973 | Aphyocharacidium bolivianum | 598 |
| Acestrorhamphus bolivianus Fowler, 1940 | Oligosarcus bolivianus | 26282 |
| Bryconamericus bolivianus Pearson, 1924 | Bryconamericus bolivianus | 598 |
| Astyanax boliviensis Ruiz-C., Román-Valencia, Taphorn, Buckup & Ortega, 2018 | Astyanax boliviensis | 119406 |
| Anacyrtus bonariensis Steindachner, 1879 | Roeboides microlepis | 57858 |
| Phenacogaster bondi Fowler, 1911 | Gymnocorymbus bondi | 38376 |
| Xenagoniates bondi Myers, 1942 | Xenagoniates bondi | 598 |
| Moenkhausia bonita Benine, Castro & Sabino, 2004 | Moenkhausia bonita | 51265 |
| Bryconamericus boops Eigenmann, 1908 | Bryconamericus iheringii | 33287 |
| Astyanax bopiensis Ruiz-C., Román-Valencia, Taphorn, Buckup & Ortega 2018 | Astyanax multidens | 119406 |
| Bryconamericus boquiae Eigenmann, 1913 | Hemibrycon boquiae | 38376 |
| Hyphessobrycon borealis Zarske, Le Bail & Géry, 2006 | Hyphessobrycon borealis | 57781 |
| Knodus borki Zarske, 2008 | Knodus borki | 79634 |
| Roeboides bouchellei Fowler, 1923 | Roeboides bouchellei | 34411 |
| Roeboides bouchellei (non Fowler, 1923) | Roeboides guatemalensis | 598 |
| Hemigrammus boulengeri Eigenmann, 1907 | Hyphessobrycon boulengeri | 26282 |
| Attonitus bounites Vari & Ortega, 2000 | Attonitus bounites | 38376 |
| Astyanax bourgeti Eigenmann, 1908 | Astyanax bourgeti | 598 |
| Xiphorhamphus brachycephalus Cope, 1894 | Oligosarcus jenynsii | 38376 |
| Astyanax brachypterygium Bertaco & Malabarba, 2001 | Astyanax brachypterygium | 41290 |
| Bramocharax bransfordi dorioni Rosen, 1970 | Astyanax dorioni | 118583 |
| Bramocharax bransfordii Gill, 1877 | Astyanax bransfordii | 38376 |
| Bryconamericus breviceps Eigenmann, 1908 | Knodus breviceps | 26282 |
| Tetragonopterus brevimanus Günther, 1864 | Astyanax brevimanus | 38376 |
| Oligosarcus brevioris Menezes, 1987 | Oligosarcus brevioris | 27925 |
| Creagrutus brevipinnis Eigenmann, 1913 | Creagrutus brevipinnis | 598 |
| Astyanax brevirhinus Eigenmann, 1908 | Astyanax brevirhinus | 598 |
| Chalceus brevirostris Günther, 1860 | Bryconamericus brevirostris | 598 |
| Hemigrammus brevis Ellis, 1911 | Hemigrammus brevis | 38376 |
| Poptella brevispina Reis, 1989 | Poptella brevispina | 12225 |
| Hemibrycon brevispini Román-Valencia & Arcila-Mesa, 2009 | Hemibrycon brevispini | 83513 |
| Poecilurichthys brevoortii Gill, 1858 | Astyanax bimaculatus | 38376 |
| Creagrutus britskii Vari & Harold, 2001 | Creagrutus britskii | 35140 |
| Moenkhausia britskii Azevedo-Santos & Benine, 2016 | Moenkhausia britskii | 112434 |
| Planaltina britskii Menezes, Weitzman & Burns, 2003 | Planaltina britskii | 50838 |
| Priocharax britzi Mattox, Souza, Toledo-Piza & Oliveira, 2021 | Priocharax britzi | 124594 |
| Spintherobolus broccae Myers, 1925 | Spintherobolus broccae | 32783 |
| Moenkhausia browni Eigenmann, 1909 | Moenkhausia browni | 38376 |
| Astyanax brucutu Zanata, Lima, Di Dario & Gerhard, 2017 | Astyanax brucutu | 117444 |
| Hyphessobrycon brumado Zanata & Camelier, 2010 | Hyphessobrycon brumado | 85847 |
| Bryconamericus bucayensis Román-Valencia, Ruiz-C., Taphorn & García-A., 2013 | Bryconamericus bucayensis | 93958 |
| Astyanax burgerai Zanata & Camelier, 2009 | Deuterodon burgerai | 81202 |
| Lepidocharax burnsi Ferreira, Menezes & Quagio-Grassiotto, 2011 | Lepidocharax burnsi | 87315 |
| Roeboides bussingi Matamoros, Chakrabarty, Angulo, Garita-Alvarado & McMahan, 2013 | Roeboides bussingi | 93809 |
| Bramocharax caballeroi Contreras-Balderas & Rivera-Teillery, 1985 | Astyanax caballeroi | 38376 |
| Hyphessobrycon cachimbensis Travassos, 1964 | Hyphessobrycon cachimbensis | 598 |
| Glandulocauda caerulea Menezes & Weitzman, 2009 | Glandulocauda caerulea | 82395 |
| Hemibrycon cairoensis Román-Valencia & Arcila-Mesa, 2009 | Hemibrycon cairoensis | 123477 |
| Creagrutus calai Vari & Harold, 2001 | Creagrutus calai | 35140 |
| Bryconamericus caldasi Román-Valencia, Ruiz-C., Taphorn B. & García-Alzate, 2014 | Bryconamericus caldasi | 106071 |
| Charax caliurus Eigenmann & Kennedy, 1907 | Cynopotamus argenteus | 36811 |
| Tetragonopterus callistus Boulenger, 1900 | Hyphessobrycon eques | 38376 |
| Chirodon calliurus Boulenger, 1900 | Serrapinnus calliurus | 26282 |
| Chirodon calliurus (non Boulenger, 1900) | Serrapinnus piaba | 32783 |
| Knodus calliurus Ahl, 1931 | Moenkhausia lepidura | 38376 |
| Microschemobrycon callops Böhlke, 1953 | Microschemobrycon callops | 598 |
| Grammabrycon calverti Fowler, 1941 | Phenacogaster calverti | 36811 |
| Amazonichthys camelierae Esguícero & Mendonça, 2023 | Amazonichthys camelierae | 130247 |
| Phenacogaster capitulata Lucena & Malabarba, 2010 | Phenacogaster capitulata | 123477 |
| Knodus caquetae Fowler, 1945 | Knodus caquetae | 38376 |
| Odontostilbe caquetae Fowler, 1943 | Odontostilbe fugitiva | 598 |
| Hemibrycon cardalensis Román-Valencia, Ruiz-C., Taphorn P., Mancera-Rodriguez & García-Alzate, 2013 | Hemibrycon cardalensis | 95113 |
| Hyphessobrycon cardinalis Myers & Weitzman, 1956 | Paracheirodon axelrodi | 38376 |
| Bryconamericus carlosi Román-Valencia, 2003 | Bryconamericus carlosi | 56110 |
| Astyanax carolinae Gill, 1870 | Psalidodon fasciatus | 38376 |
| Hemibrycon carrilloi Dahl, 1960 | Hemibrycon carrilloi | 38376 |
| Vesicatrus carteri Norman, 1934 | Phenacogaster carteri | 36811 |
| Roeboides carti Lucena, 2000 | Roeboides carti | 36811 |
| Tetragonopterus carvalhoi Melo, Benine, Mariguela & Oliveira, 2011 | Tetragonopterus carvalhoi | 86682 |
| Bryconamericus cascajalensis Meek & Hildebrand, 1916 | Bryconamericus emperador | 38376 |
| Microschemobrycon casiquiare Böhlke, 1953 | Microschemobrycon casiquiare | 598 |
| Dermatocheir catablepta Durbin, 1909 | Hyphessobrycon catableptus | 26282 |
| Roeboides caucae Eigenmann, 1922 | Roeboides dayi | 34412 |
| Bryconamericus caucanus Eigenmann, 1913 | Bryconamericus caucanus | 38376 |
| Creagrutus caucanus Eigenmann, 1913 | Creagrutus caucanus | 598 |
| Gephyrocharax caucanus Eigenmann, 1912 | Gephyrocharax caucanus | 33021 |
| Tetragonopterus caucanus Steindachner, 1879 | Astyanax caucanus | 38376 |
| Charax caudimaculatus Lucena, 1987 | Charax caudimaculatus | 36811 |
| Hemigrammus caudovittatus Ahl, 1923 | Psalidodon anisitsi | 38376 |
| Moenkhausia celibela Marinho & Langeani, 2010 | Moenkhausia celibela | 85060 |
| Moenkhausia ceros Eigenmann, 1908 | Moenkhausia ceros | 38376 |
| Creagrutus cerritulus Netto-Ferreira & Vari, 2017 | Creagrutus cerritulus | 116020 |
| Tetragonopterus chalceus Spix & Agassiz, 1829 | Tetragonopterus chalceus | 79891 |
| Creagrutus changae Vari & Harold, 2001 | Creagrutus changae | 35140 |
| Hemigrammus changae Ota, Lima & Hidalgo, 2019 | Hemigrammus changae | 120197 |
| Astyanax chapadae Fowler, 1906 | Knodus chapadae | 598 |
| Astyanax chaparae Fowler, 1943 | Astyanax chaparae | 38376 |
| Gephyrocharax chaparae Fowler, 1940 | Gephyrocharax chaparae | 598 |
| Bryconamericus charalae Román-Valencia, 2005 | Bryconamericus charalae | 77139 |
| Astyanax chico Casciotta & Almirón, 2004 | Psalidodon chico | 55793 |
| Moenkhausia chlorophthalma Sousa, Netto-Ferreira & Birindelli, 2010 | Moenkhausia chlorophthalma | 84462 |
| Bryconamericus chocoensis Eigenmann, 1913 | Argopleura chocoensis | 26282 |
| Gephyrocharax chocoensis Eigenmann, 1912 | Gephyrocharax chocoensis | 598 |
| Hyphessobrycon chocoensis García-Alzate, Román-Valencia & Taphorn, 2013 | Hyphessobrycon chocoensis | 92992 |
| Tetragonopterus chrysargyreus Günther, 1864 | Moenkhausia chrysargyrea | 38376 |
| Stethaprion chryseum Cope, 1872 | Stethaprion erythrops | 36891 |
| Bryconamericus cinarucoense Román-Valencia, Taphorn & Ruiz-C., 2008 | Bryconamericus cinarucoense | 77139 |
| Buritia cisalpinoi Brant, 1974 | Orthospinus franciscensis | 36891 |
| Bryconamericus cismontanus Eigenmann, 1914 | Bryconamericus cismontanus | 598 |
| Jupiaba citrina Zanata & Ohara, 2009 | Jupiaba citrina | 83382 |
| Hyphessobrycon clavatus Zarske, 2015 | Hyphessobrycon clavatus | 105293 |
| Astyanax clavitaeniatus Garutti, 2003 | Astyanax clavitaeniatus | 55833 |
| Tetragonopterus cobanensis Bocourt, 1868 | Psalidodon fasciatus | 38376 |
| Grundulus cochae Román-Valencia, Paepke & Pantoja, 2003 | Grundulus cochae | 49958 |
| Creagrutus cochui Géry, 1964 | Creagrutus cochui | 6329 |
| Microbrycon cochui (non Ladiges, 1950) | Boehlkea fredcochui | 4537 |
| Microbrycon cochui Ladiges, 1950 | Tyttocharax cochui | 26282 |
| Astyanax cocibolca Bussing, 2008 | Astyanax cocibolca | 83537 |
| Hyphessobrycon coelestinus Myers, 1929 | Hyphessobrycon coelestinus | 598 |
| Bryconamericus coeruleus Jerep & Shibatta, 2017 | Bryconamericus coeruleus | 128464 |
| Hemigrammus coeruleus Durbin, 1908 | Hemigrammus coeruleus | 38376 |
| Aphyocharax colifax Taphorn & Thomerson, 1991 | Aphyocharax colifax | 38382 |
| Tetragonopterus collettii Steindachner, 1882 | Moenkhausia collettii | 38376 |
| Hemibrycon colombianus Eigenmann, 1914 | Hemibrycon colombianus | 598 |
| Hyphessobrycon columbianus Zarske & Géry, 2002 | Hyphessobrycon columbianus | 44097 |
| Moenkhausia comma Eigenmann, 1908 | Moenkhausia comma | 38376 |
| Hyphessobrycon comodoro Dagosta, Seren, Ferreira & Marinho, 2022 | Hyphessobrycon comodoro | 128640 |
| Hemigrammus compressus Meek, 1904 | Hyphessobrycon compressus | 13676 |
| Tetragonopterus compressus Günther, 1864 | Poptella compressa | 36891 |
| Hyphessobrycon compressus milleri Durbin, 1908 | Hyphessobrycon milleri | 13676 |
| Asiphonichthys condei Géry & Knöppel, 1976 | Charax condei | 36811 |
| Hyphessobrycon condotensis Regan, 1913 | Hyphessobrycon condotensis | 38376 |
| Bryconamericus conventus Eigenmann, 1913 | Argopleura conventus | 38597 |
| Hydrolycus copei Gill, 1870 | Charax tectifer | 598 |
| Stethaprion copei Steindachner, 1882 | Brachychalcinus copei | 36891 |
| Tetragonopterus copei Steindachner, 1882 | Moenkhausia copei | 46206 |
| Hyphessobrycon copelandi Durbin, 1908 | Hyphessobrycon copelandi | 12225 |
| Xenurobrycon coracoralinae Moreira, 2005 | Xenurobrycon coracoralinae | 56894 |
| Tetragonopterus cordovae Günther, 1880 | Astyanax cordovae | 38376 |
| Tetragonopterus correntinus Holmberg, 1891 | Psalidodon correntinus | 46206 |
| Moenkhausia cosmops Lima, Britski & Machado, 2007 | Moenkhausia cosmops | 72399 |
| Tetragonopterus costae Steindachner, 1907 | Moenkhausia costae | 38376 |
| Nematocharax costai Bragança, Barbosa & Mattos, 2013 | Nematocharax costai | 93323 |
| Moenkhausia cotinho Eigenmann, 1908 | Moenkhausia cotinho | 598 |
| Astyanax courensis Bertaco, Carvalho & Jerep, 2010 | Astyanax courensis | 84461 |
| Creagrutus cracentis Vari & Harold, 2001 | Creagrutus cracentis | 35140 |
| Rachoviscus crassiceps Myers, 1926 | Rachoviscus crassiceps | 38376 |
| Astyanax cremnobates Bertaco & Malabarba, 2001 | Astyanax cremnobates | 41290 |
| Stethaprion crenatum Eigenmann, 1916 | Stethaprion crenatum | 36891 |
| Creagrutus crenatus Vari & Harold, 2001 | Creagrutus crenatus | 35140 |
| Hasemania crenuchoides Zarske & Géry, 1999 | Hasemania crenuchoides | 38376 |
| Moenkhausia crisnejas Pearson, 1929 | Moenkhausia crisnejas | 38376 |
| Bryconamericus cristiani Román-Valencia, 1999 | Bryconamericus cristiani | 38376 |
| Astyanax cubilhuitz Schmitter-Soto, 2017 | Astyanax cubilhuitz | 118583 |
| Hemigrammus cupreus Durbin, 1918 | Hemigrammus cupreus | 38376 |
| Tetragonopterus cuvieri Lütken, 1875 | Psalidodon fasciatus | 38376 |
| Hyphessobrycon cyanotaenia Zarske & Géry, 2006 | Hyphessobrycon cyanotaenia | 57697 |
| Parecbasis cyclolepis Eigenmann, 1914 | Parecbasis cyclolepis | 6329 |
| Hemigrammus cylindricus Durbin, 1909 | Hemigrammus cylindricus | 38376 |
| Astyanax daguae Eigenmann, 1913 | Tetragonopterus daguae | 38376 |
| Bryconamericus dahli Román-Valencia, 2000 | Bryconamericus dahli | 38376 |
| Amazonspinther dalmata Bührnheim, Carvalho, Malabarba & Weitzman, 2008 | Amazonspinther dalmata | 79887 |
| Hemibrycon dariensis Meek & Hildebrand, 1916 | Hemibrycon dariensis | 598 |
| Moenkhausia dasalmas Bertaco, Jerep & Carvalho, 2011 | Moenkhausia dasalmas | 86678 |
| Anacyrtus dayi Steindachner, 1878 | Roeboides dayi | 36811 |
| Roeboides dayi dientonito Schultz, 1944 | Roeboides dientonito | 27116 |
| Roeboides dayi dientonito (non Schultz, 1944) | Roeboides dayi | 34412 |
| Bryconamericus decurrens Eigenmann, 1913 | Hemibrycon decurrens | 38376 |
| Charax delimai Menezes & Lucena, 2014 | Charax delimai | 96861 |
| Ceratobranchia delotaenia Chernoff & Machado-Allison, 1990 | Ceratobranchia delotaenia | 38376 |
| Knodus delta Géry, 1972 | Knodus delta | 598 |
| Aphyocharax dentatus Eigenmann & Kennedy, 1903 | Aphyocharax dentatus | 38382 |
| Bryconamericus dentatus Eigenmann, 1913 | Hemibrycon dentatus | 38376 |
| Hemibrycon dentatus jabonero Schultz, 1944 | Hemibrycon jabonero | 38376 |
| Tetragonopterus denticulatus Silva, Melo, Oliveira & Benine, 2013 | Tetragonopterus denticulatus | 93280 |
| Astyanax depressirostris Miranda Ribeiro, 1908 | Astyanax depressirostris | 38376 |
| Astyanax depressirostris (non Miranda Ribeiro, 1908) | Deuterodon iguape | 38376 |
| Roeboides descalvadensis Fowler, 1932 | Roeboides descalvadensis | 75795 |
| Bryconamericus deuterodonoides Eigenmann, 1914 | Bryconamericus deuterodonoides | 38376 |
| Bryconamericus deuterodonoides caudovittatus Inger, 1956 | Bryconamericus deuterodonoides | 38376 |
| Bryconamericus deuterodonoides euryodous Schultz, 1944 | Bryconamericus deuterodonoides | 38376 |
| Hemigrammus diagonicus Mendonça & Wosiacki, 2011 | Hemigrammus diagonicus | 87304 |
| Cheirodon dialepturus Fink & Weitzman, 1974 | Odontostilbe dialeptura | 34064 |
| Lepidocharax diamantina Ferreira, Menezes & Quagio-Grassiotto, 2011 | Lepidocharax diamantina | 87315 |
| Moenkhausia diamantina Benine, Castro & Santos, 2007 | Moenkhausia diamantina | 75036 |
| Hyphessobrycon diancistrus Weitzman, 1977 | Hyphessobrycon diancistrus | 27925 |
| Tetragonopterus diaphanus Cope, 1878 | Bryconamericus diaphanus | 26282 |
| Hyphessobrycon diastatos Dagosta, Marinho & Camelier, 2014 | Hyphessobrycon diastatos | 102657 |
| Tetragonopterus dichrourus Kner, 1858 | Moenkhausia dichroura | 38376 |
| Moenkhausia dichrourus intermedius Eigenmann, 1908 | Moenkhausia intermedia | 38376 |
| Cyanocharax dicropotamicus Malabarba & Weitzman, 2003 | Diapoma dicropotamicus | 55830 |
| Odontostilbe dierythrura Fowler, 1940 | Odontostilbe dierythrura | 598 |
| Notropocharax difficilis Marini, Nichols & La Monte, 1933 | Aphyocharax dentatus | 38382 |
| Moenkhausia diktyota Lima & Toledo-Piza, 2001 | Moenkhausia diktyota | 41101 |
| Bryconamericus diquensis Eigenmann, 1913 | Argopleura diquensis | 38597 |
| Roeboides dispar Lucena, 2001 | Roeboides dispar | 36811 |
| Astyanax dissensus Lucena & Thofehrn, 2013 | Psalidodon dissensus | 94153 |
| Astyanax dissimilis Garavello & Sampaio, 2010 | Astyanax dissimilis | 85756 |
| Hemibrycon divisorensis Bertaco, Malabarba, Hidalgo & Ortega, 2007 | Hemibrycon divisorensis | 75799 |
| Astyanax dnophos Lima & Zuanon, 2004 | Astyanax dnophos | 55826 |
| Tetragonopterus doceanus Steindachner, 1877 | Moenkhausia doceana | 38376 |
| Pseudocorynopoma doriae Perugia, 1891 | Pseudocorynopoma doriae | 38597 |
| Hyphessobrycon dorsalis Zarske, 2014 | Hyphessobrycon dorsalis | 96662 |
| Tyttobrycon dorsimaculatus Géry, 1973 | Tyttobrycon dorsimaculatus | 598 |
| Moenkhausia dorsinuda Zarske & Géry, 2002 | Moenkhausia dorsinuda | 48392 |
| Knodus dorsomaculatus Ferreira & Netto-Ferreira, 2010 | Knodus dorsomaculatus | 85071 |
| Astyanax douradilho Bertaco, 2014 | Astyanax douradilho | 96006 |
| Odontostilbe drepanon Fowler, 1913 | Odontostilbe fugitiva | 598 |
| Monotocheirodon drilos Menezes, Weitzman & Quagio-Grassiotto, 2013 | Monotocheirodon drilos | 94699 |
| Hyphessobrycon duragenys Ellis, 1911 | Hyphessobrycon duragenys | 598 |
| Hemigrammus durbinae Ota, Lima & Pavanelli, 2015 | Hemigrammus durbinae | 101340 |
| Bryconamericus ecai da Silva, 2004 | Bryconamericus ecai | 54750 |
| Bryconamericus ecuadorensis Román-Valencia, Ruiz-C., Taphorn B., Jiménez-Prado & García-Alzate, 2015 | Bryconamericus ecuadorensis | 104976 |
| Megalamphodus ecuadorensis Eigenmann, 1915 | Hyphessobrycon ecuadorensis | 38376 |
| Odontostilbe ecuadorensis Bührnheim & Malabarba, 2006 | Odontostilbe ecuadorensis | 57085 |
| Hyphessobrycon ecuadoriensis Eigenmann & Henn, 1914 | Hyphessobrycon ecuadoriensis | 13676 |
| Astyanax eigenmanni Evermann & Kendall, 1906 | Bryconamericus eigenmanni | 33287 |
| Cheirodon eigenmanni Meek, 1912 | Carlana eigenmanni | 38501 |
| Moenkhausia eigenmanni Géry, 1964 | Moenkhausia eigenmanni | 38376 |
| Othonocheirodus eigenmanni Myers, 1927 | Othonocheirodus eigenmanni | 6329 |
| Tetragonopterus eigenmanniorum Cope, 1894 | Psalidodon eigenmanniorum | 38376 |
| Hyphessobrycon eilyos Lima & Moreira, 2003 | Hyphessobrycon eilyos | 52338 |
| Astyanax elachylepis Bertaco & Lucinda, 2005 | Astyanax elachylepis | 56789 |
| Hyphessobrycon elachys Weitzman, 1984 | Hyphessobrycon elachys | 38376 |
| Jupiaba elassonaktis Pereira & Lucinda, 2007 | Jupiaba elassonaktis | 72401 |
| Ceratobranchia elatior Tortonese, 1942 | Ceratobranchia elatior | 598 |
| Tetragonopterus elegans Steindachner, 1882 | Hemigrammus elegans | 38376 |
| Chrysobrycon eliasi Vanegas-Ríos, Azpelicueta & Ortega, 2011 | Chrysobrycon eliasi | 88954 |
| Hyphessobrycon ellisae Bragança, Ottoni & Rangel-Pereira, 2015 | Hyphessobrycon itaparicensis | 118985 |
| Hyphessobrycon ellisi Pearson, 1924 | Bryconacidnus ellisae | 26282 |
| Hyphessobrycon ellisi (non Pearson, 1924) | Microgenys weyrauchi | 38376 |
| Bramocharax elongatus Meek, 1907 | Astyanax bransfordii | 38376 |
| Microschemobrycon elongatus Géry, 1973 | Microschemobrycon elongatus | 598 |
| Astyanax embera Ruiz-C., Román-Valencia, Taphorn, Buckup & Ortega, 2018 | Astyanax embera | 119406 |
| Astyanax emperador Eigenmann & Ogle, 1907 | Bryconamericus emperador | 598 |
| Astyanax endy Mirande, Aguilera & Azpelicueta, 2006 | Psalidodon endy | 57788 |
| Hyphessobrycon eos Durbin, 1909 | Hyphessobrycon eos | 38376 |
| Attonitus ephimeros Vari & Ortega, 2000 | Attonitus ephimeros | 38376 |
| Creagrutus ephippiatus Vari & Harold, 2001 | Creagrutus ephippiatus | 35140 |
| Astyanax epiagos Zanata & Camelier, 2008 | Astyanax epiagos | 79518 |
| Hyphessobrycon epicharis Weitzman & Palmer, 1997 | Hyphessobrycon epicharis | 13676 |
| Cheirodon eques Steindachner, 1882 | Hyphessobrycon eques | 13676 |
| Astyanax eremus Ingenito & Duboc, 2014 | Astyanax eremus | 96865 |
| Hyphessobrycon ericae Moreira & Lima, 2017 | Hyphessobrycon ericae | 116179 |
| Stethaprion erythrops Cope, 1870 | Stethaprion erythrops | 6329 |
| Tetragonopterus erythropterus Holmberg, 1891 | Psalidodon erythropterus | 38376 |
| Hemigrammus erythrostigma Fowler, 1943 | Hyphessobrycon erythrostigma | 4537 |
| Hemigrammus erythrozonus Durbin, 1909 | Hemigrammus erythrozonus | 38376 |
| Aphyocharax erythrurus Eigenmann, 1912 | Aphyocharax erythrurus | 38382 |
| Hyphessobrycon erythrurus Ahl, 1928 | Psalidodon anisitsi | 38376 |
| Hyphessobrycon eschwartzae García-Alzate, Román-Valencia & Ortega, 2013 | Hyphessobrycon eschwartzae | 93393 |
| Astyanax essequibensis Eigenmann, 1909 | Jupiaba essequibensis | 27970 |
| Cynopotamus essequibensis Eigenmann, 1912 | Cynopotamus essequibensis | 36811 |
| Aulixidens eugeniae Böhlke, 1952 | Aulixidens eugeniae | 28768 |
| Moenkhausia eurystaenia Marinho, 2010 | Moenkhausia eurystaenia | 85160 |
| Deuterodon euspilurus (non Fowler, 1945) | Odontostilbe fugitiva | 57085 |
| Deuterodon euspilurus Fowler, 1945 | Odontostilbe euspilurus | 57085 |
| Bryconamericus exodon Eigenmann, 1907 | Bryconamericus exodon | 598 |
| Epicyrtus exodon Valenciennes, 1850 | Exodon paradoxus | 38376 |
| Chalceus fasciatus Cuvier, 1819 | Psalidodon fasciatus | 38376 |
| Hemibrycon fasciatus Román-Valencia, Ruiz-C., Taphorn P., Mancera-Rodriguez & García-Alzate, 2013 | Hemibrycon fasciatus | 95113 |
| Astyanax fasciatus altior (non Hubbs, 1936) | Psalidodon fasciatus | 52299 |
| Astyanax fasciatus altior Hubbs, 1936 | Astyanax altior | 54621 |
| Tetragonopterus fasciatus longirostris Steindachner, 1907 | Deuterodon longirostris | 38376 |
| Tetragonopterus fasciatus longirostris (non Steindachner, 1907) | Astyanax scabripinnis | 38376 |
| Astyanax fasciatus orteguasae Fowler, 1943 | Psalidodon fasciatus | 38376 |
| Astyanax fasciatus parahybae Eigenmann, 1908 | Psalidodon parahybae | 38376 |
| Tetragonopterus fasslii Steindachner, 1915 | Astyanax fasslii | 38376 |
| Pedalibrycon felipponei Fowler, 1943 | Cheirodon interruptus | 37055 |
| Hyphessobrycon fernandezi Fernández-Yépez, 1972 | Hyphessobrycon fernandezi | 38376 |
| Tetragonopterus festae Boulenger, 1898 | Eretmobrycon festae | 38376 |
| Creagrutus figueiredoi Vari & Harold, 2001 | Creagrutus figueiredoi | 35140 |
| Knodus figueiredoi Esguícero & Castro, 2014 | Knodus figueiredoi | 97362 |
| Kolpotocheirodon figueiredoi Malabarba, Lima & Weitzman, 2004 | Kolpotocheirodon figueiredoi | 76978 |
| Hemigrammus filamentosus Zarske, 2011 | Hemigrammus filamentosus | 87321 |
| Zygogaster filiferus Eigenmann, 1913 | Astyanax filiferus | 38376 |
| Aphyocharax filigerus Cope, 1870 | Prionobrama filigera | 26282 |
| Tetragonopterus finitimus Bocourt, 1868 | Astyanax finitimus | 118583 |
| Hyphessobrycon flammeus Myers, 1924 | Hyphessobrycon flammeus | 96863 |
| Hyphessobrycon flammeus guabirubae Godoy, 1987 | Hyphessobrycon griemi | 38376 |
| Creagrutus flavescens Vari & Harold, 2001 | Creagrutus flavescens | 35140 |
| Gymnocorymbus flaviolimai Benine, Melo, Castro & Oliveira, 2015 | Gymnocorymbus flaviolimai | 101636 |
| Bryconamericus foncensis Román-Valencia, Vanegas-Ríos & Ruiz-C., 2009 | Bryconamericus foncensis | 82388 |
| Moenkhausia forestii Benine, Mariguela & Oliveira, 2009 | Moenkhausia forestii | 81199 |
| Axelrodia fowleri Géry, 1965 | Axelrodia stigmatias | 38376 |
| Fowlerina franciscensis Eigenmann, 1914 | Orthospinus franciscensis | 36891 |
| Roeboides francisci Steindachner, 1908 | Roeboides xenodon | 598 |
| Ephippicharax franciscoensis Eigenmann, 1929 | Orthospinus franciscensis | 36891 |
| Phenacogaster franciscoensis Eigenmann, 1911 | Phenacogaster franciscoensis | 36811 |
| Tetragonopterus franciscoensis Silva, Melo, Oliveira & Benine, 2016 | Tetragonopterus franciscoensis | 124043 |
| Hyphessobrycon frankei Zarske & Géry, 1997 | Hyphessobrycon frankei | 38376 |
| Boehlkea fredcochui Géry, 1966 | Boehlkea fredcochui | 6329 |
| Odontostilbe fugitiva Cope, 1870 | Odontostilbe fugitiva | 34064 |
| Tetragonopterus fulgens Bocourt, 1868 | Astyanax mexicanus | 38376 |
| Bryconamericus galvisi Román-Valencia, 2000 | Bryconamericus galvisi | 38376 |
| Knodus gamma Géry, 1972 | Knodus gamma | 598 |
| Astyanax gandhiae Ruiz-C., Román-Valencia, Taphorn, Buckup & Ortega, 2018 | Astyanax gandhiae | 119406 |
| Deuterodon garujo Lucena & Lucena, 1992 | Deuterodon langei | 38376 |
| Cheirodontops geayi Schultz, 1944 | Cheirodontops geayi | 28768 |
| Hemigrammus geisleri Zarske & Géry, 2007 | Hemigrammus geisleri | 58756 |
| Microschemobrycon geisleri Géry, 1973 | Microschemobrycon geisleri | 598 |
| Hyphessobrycon georgettae Géry, 1961 | Hyphessobrycon georgettae | 38376 |
| Moenkhausia georgiae Géry, 1965 | Tetragonopterus georgiae | 38376 |
| Parapristella georgiae Géry, 1964 | Parapristella georgiae | 28768 |
| Petitella georgiae Géry & Boutière, 1964 | Petitella georgiae | 38376 |
| Creagrutus gephyrus Böhlke & Saul, 1975 | Creagrutus gephyrus | 598 |
| Knodus geryi Lima, Britski & Machado, 2004 | Knodus geryi | 55831 |
| Roeboexodon geryi (non Myers, 1960) | Roeboexodon guyanensis | 38376 |
| Roeboexodon geryi Myers, 1960 | Roeboexodon geryi | 38376 |
| Cynopotamus gibbosus Valenciennes, 1850 | Charax gibbosus | 36811 |
| Salmo gibbosus Linnaeus, 1758 | Charax gibbosus | 36811 |
| Acestrocephalus ginesi Lasso & Taphorn, 2000 | Acestrocephalus sardina | 75890 |
| Astyanax gisleni Dahl, 1943 | Astyanax gisleni | 38376 |
| Astyanax giton Eigenmann, 1908 | Deuterodon giton | 38376 |
| Planaltina glandipedis Menezes, Weitzman & Burns, 2003 | Planaltina glandipedis | 50838 |
| Charax goeldii Fowler, 1913 | Galeocharax gulo | 35496 |
| Bryconamericus gonzalezi Román-Valencia, 2002 | Bryconamericus gonzalezi | 38376 |
| Cheirodon gorgonae Evermann & Goldsborough, 1909 | Compsura gorgonae | 598 |
| Cynopotamus gouldingi Menezes, 1987 | Cynopotamus gouldingi | 27925 |
| Astyanax goyacensis Eigenmann, 1908 | Astyanax goyacensis | 38376 |
| Astyanacinus goyanensis Miranda Ribeiro, 1944 | Astyanax goyanensis | 38376 |
| Rachoviscus graciliceps Weitzman & Cruz, 1981 | Rachoviscus graciliceps | 27925 |
| Astyanax gracilior Eigenmann, 1908 | Astyanax gracilior | 38376 |
| Hyphessobrycon gracilior Géry, 1964 | Hyphessobrycon gracilior | 598 |
| Aphyocharax gracilis Fowler, 1940 | Aphyocharax gracilis | 38382 |
| Cheirodon gracilis Géry, 1960 | Serrapinnus gracilis | 26282 |
| Creagrutus gracilis Vari & Harold, 2001 | Creagrutus gracilis | 35140 |
| Tetragonopterus gracilis Lütken, 1875 | Hemigrammus gracilis | 26282 |
| Cheirodon gracilis littoris Géry, 1960 | Odontostilbe littoris | 37055 |
| Aphyodite grammica Eigenmann, 1912 | Aphyodite grammica | 116757 |
| Astyanax grandis Meek & Hildebrand, 1912 | Psalidodon fasciatus | 38376 |
| Tetragonopterus grandisquamis Müller & Troschel, 1845 | Moenkhausia grandisquamis | 38376 |
| Hyphessobrycon griemi Hoedeman, 1957 | Hyphessobrycon griemi | 38376 |
| Tetragonopterus gronovii Valenciennes, 1850 | Astyanax bimaculatus | 38376 |
| Bryconamericus grosvenori Eigenmann, 1927 | Bryconamericus grosvenori | 6329 |
| Chrysobrycon guahibo Vanegas-Ríos, Urbano-Bonilla & Azpelicueta, 2015 | Chrysobrycon guahibo | 119432 |
| Creagrutus guanes Torres-Mejia & Vari, 2005 | Creagrutus guanes | 55562 |
| Astyanax guaporensis Eigenmann, 1911 | Makunaima guaporensis | 38376 |
| Microschemobrycon guaporensis Eigenmann, 1915 | Microschemobrycon guaporensis | 598 |
| Hyphessobrycon guarani Mahnert & Géry, 1987 | Diapoma guarani | 27925 |
| Astyanax guaricana Oliveira, Abilhoa & Pavanelli, 2013 | Astyanax guaricana | 93808 |
| Anacyrtus guatemalensis Günther, 1864 | Roeboides guatemalensis | 36811 |
| Hemibrycon guejarensis Román-Valencia, Ruiz-C. & Taphorn, 2018 | Hemibrycon guejarensis | 128867 |
| Astyanax guianensis Eigenmann, 1909 | Makunaima guianensis | 28768 |
| Brachychalcinus guianensis Boeseman, 1952 | Brachychalcinus orbicularis | 36891 |
| Bryconamericus guizae Román-Valencia, 2003 | Bryconamericus guizae | 49955 |
| Cynopotamus gulo Cope, 1870 | Galeocharax gulo | 6329 |
| Tetragonopterus guppyi Regan, 1906 | Hemibrycon taeniurus | 85819 |
| Bryconamericus guyanensis Zarske, Le Bail & Géry, 2010 | Bryconamericus guyanensis | 84136 |
| Exodon guyanensis Puyo, 1948 | Roeboexodon guyanensis | 26282 |
| Hemigrammus guyanensis Géry, 1959 | Hemigrammus guyanensis | 38376 |
| Psalidodon gymnodontus Eigenmann, 1911 | Psalidodon gymnodontus | 123753 |
| Astyanax gymnogenys Eigenmann, 1911 | Psalidodon gymnogenys | 38376 |
| Creagrutus gyrospilus Vari & Harold, 2001 | Creagrutus gyrospilus | 35140 |
| Opisthanodus haerteli Ahl, 1935 | Moenkhausia pittieri | 38376 |
| Astyanax hamatilis Camelier & Zanata, 2014 | Deuterodon hamatilis | 95041 |
| Hyphessobrycon hamatus Bertaco & Malabarba, 2005 | Hyphessobrycon hamatus | 54469 |
| Tyttobrycon hamatus Géry, 1973 | Tyttobrycon hamatus | 598 |
| Pristicharax hanseni Fowler, 1949 | Hasemania hanseni | 38376 |
| Astyanax hanstroemi Dahl, 1943 | Psalidodon fasciatus | 38376 |
| Bryconella haraldi Géry, 1965 | Bryconella pallidifrons | 598 |
| Hyphessobrycon haraldschultzi Travassos, 1960 | Hyphessobrycon haraldschultzi | 13676 |
| Astyanax hasemani Eigenmann, 1914 | Diapoma alburnum | 38376 |
| Charax hasemani Steindachner, 1915 | Roeboides myersii | 36811 |
| Hyphessobrycon hasemani Fowler, 1913 | Hyphessobrycon hasemani | 13676 |
| Odontostilbe hasemani Fowler, 1940 | Odontostilbe dierythrura | 598 |
| Astyanax hastatus Myers, 1928 | Deuterodon hastatus | 38376 |
| Odontostilbe hastatus Eigenmann, 1913 | Saccoderma hastata | 37055 |
| Tetragonopterus hauxwellianus Cope, 1870 | Ctenobrycon hauxwellianus | 38376 |
| Moenkhausia heikoi Géry & Zarske, 2004 | Moenkhausia heikoi | 57598 |
| Hyphessobrycon heliacus Moreira, Landim & Costa, 2002 | Hyphessobrycon heliacus | 42626 |
| Hemibrycon helleri Eigenmann, 1927 | Hemibrycon helleri | 38376 |
| Moenkhausia hemigrammoides Géry, 1965 | Moenkhausia hemigrammoides | 38376 |
| Aphyocheirodon hemigrammus Eigenmann, 1915 | Aphyocheirodon hemigrammus | 598 |
| Asiphonichthys hemigrammus Eigenmann, 1912 | Charax hemigrammus | 36811 |
| Bryconamericus hemigrammus Pearson, 1924 | Bryconacidnus hemigrammus | 38376 |
| Bryconamericus henni Eigenmann, 1914 | Phenacobrycon henni | 34079 |
| Astyanax henseli de Melo & Buckup, 2006 | Astyanax henseli | 56653 |
| Hydrocyon hepsetus Cuvier, 1829 | Oligosarcus hepsetus | 598 |
| Hyphessobrycon herbertaxelrodi Géry, 1961 | Hyphessobrycon herbertaxelrodi | 38376 |
| Astyanax hermosus Miquelarena, Protogino & López, 2005 | Psalidodon hermosus | 57461 |
| Hysteronotus hesperus Böhlke, 1958 | Chrysobrycon hesperus | 6329 |
| Pseudocorynopoma heterandria Eigenmann, 1914 | Pseudocorynopoma heterandria | 34079 |
| Aphyocarax heteresthes Ulrey, 1894 | Hyphessobrycon heteresthes | 38376 |
| Bryconamericus heteresthes Eigenmann, 1908 | Knodus heteresthes | 26282 |
| Holesthes heterodon Eigenmann, 1915 | Serrapinnus heterodon | 26282 |
| Xenurobrycon heterodon Weitzman & Fink, 1985 | Xenurobrycon heterodon | 6329 |
| Tetragonopterus heterorhabdus Ulrey, 1894 | Hyphessobrycon heterorhabdus | 26282 |
| Probolodus heterostomus Eigenmann, 1911 | Deuterodon heterostomus | 598 |
| Compsura heterura Eigenmann, 1915 | Compsura heterura | 34064 |
| Astyanax heterurus Eigenmann & Wilson, 1914 | Psalidodon fasciatus | 38376 |
| Hyphessobrycon hexastichos Bertaco & Carvalho, 2005 | Hyphessobrycon hexastichos | 56786 |
| Gymnotichthys hildae Fernández-Yépez, 1950 | Gymnotichthys hildae | 28768 |
| Hyphessobrycon hildae Fernández-Yépez, 1950 | Hyphessobrycon hildae | 598 |
| Creagrutus hildebrandi Schultz, 1944 | Creagrutus hildebrandi | 28667 |
| Roeboides hildebrandi Eigenmann, 1922 | Roeboides occidentalis | 34412 |
| Creagrutus holmi Vari & Harold, 2001 | Creagrutus holmi | 35140 |
| Amblystilbe howesi Fowler, 1940 | Prodontocharax howesi | 26282 |
| Tetragonopterus huambonicus Steindachner, 1882 | Hemibrycon huambonicus | 38376 |
| Anoptichthys hubbsi Álvarez, 1947 | Astyanax jordani | 38376 |
| Tetragonopterus huberi Steindachner, 1909 | Tetragonopterus argenteus | 124043 |
| Bryconamericus huilae Román-Valencia, 2003 | Bryconamericus huilae | 49955 |
| Hydrocyon humeralis Valenciennes, 1834 | Galeocharax humeralis | 35496 |
| Tetragonopterus humilis Günther, 1864 | Psalidodon fasciatus | 38376 |
| Hemigrammus hyanuary Durbin, 1918 | Hemigrammus hyanuary | 38376 |
| Bryconamericus hyphesson Eigenmann, 1909 | Bryconamericus hyphesson | 598 |
| Bryconamericus hypopterus Fowler, 1943 | Knodus hypopterus | 38376 |
| Creagrutus hysginus Harold, Vari, Machado-Allison & Provenzano, 1994 | Creagrutus hysginus | 28768 |
| Moenkhausia hysterosticta Lucinda, Malabarba & Benine, 2007 | Moenkhausia hysterosticta | 58760 |
| Jupiaba iasy Netto-Ferreira, Zanata, Birindelli & Sousa, 2009 | Jupiaba iasy | 82468 |
| Bryconamericus icelus Dahl, 1964 | Bryconamericus icelus | 38376 |
| Bryconamericus ichoensis Román-Valencia, 2000 | Bryconamericus ichoensis | 38376 |
| Thayeria ifati Géry, 1959 | Thayeria ifati | 38376 |
| Hyphessobrycon igneus Miquelarena, Menni, López & Casciotta, 1980 | Hyphessobrycon igneus | 57793 |
| Creagrutus ignotus Vari & Harold, 2001 | Creagrutus ignotus | 35140 |
| Deuterodon iguape Eigenmann, 1907 | Deuterodon iguape | 598 |
| Hyphessobrycon iheringi Fowler, 1941 | Hyphessobrycon iheringi | 598 |
| Odontostilbe iheringi Fowler, 1941 | Serrapinnus heterodon | 34064 |
| Tetragonopterus iheringii Boulenger, 1887 | Bryconamericus iheringii | 598 |
| Bryconamericus ikaa Casciotta, Almirón & Azpelicueta, 2004 | Bryconamericus ikaa | 52417 |
| Roeboides ilseae Bussing, 1986 | Roeboides ilseae | 36811 |
| Hemibrycon inambari Bertaco & Malabarba, 2010 | Hemibrycon inambari | 85819 |
| Hemigrammus inconstans Eigenmann & Ogle, 1907 | Hyphessobrycon inconstans | 7442 |
| Nans indefessus Mirande, Aguilera & Azpelicueta, 2004 | Bryconamericus indefessus | 55778 |
| Glandulocauda inequalis Eigenmann, 1911 | Mimagoniates inequalis | 30267 |
| Hyphessobrycon innesi Myers, 1936 | Paracheirodon innesi | 4537 |
| Stethaprion innesi Myers, 1932 | Stethaprion crenatum | 36891 |
| Moenkhausia inrai Géry, 1992 | Moenkhausia inrai | 38376 |
| Cheirodon insignis Steindachner, 1880 | Nanocheirodon insignis | 26543 |
| Luetkenia insignis Steindachner, 1876 | Stichonodon insignis | 26282 |
| Astyanax integer Myers, 1930 | Astyanax integer | 38376 |
| Gephyrocharax intermedius Meek & Hildebrand, 1916 | Gephyrocharax intermedius | 27116 |
| Tetragonopterus interruptus Jenyns, 1842 | Cheirodon interruptus | 37055 |
| Cheirodon interruptus ibicuhiensis Eigenmann, 1915 | Cheirodon ibicuhiensis | 26282 |
| Hemigrammus iota Durbin, 1909 | Hemigrammus iota | 38376 |
| Aphyocharax ipacarayensis Ahl, 1923 | Aphyocharax anisitsi | 38382 |
| Tetragonopterus ipanquianus Cope, 1877 | Acrobrycon ipanquianus | 94771 |
| Coelurichthys iporangae Miranda Ribeiro, 1908 | Mimagoniates microlepis | 34092 |
| Attonitus irisae Vari & Ortega, 2000 | Attonitus irisae | 38376 |
| Hyphessobrycon isiri Almirón, Casciotta & Koerber, 2006 | Hyphessobrycon isiri | 78525 |
| Astyanax ita Almirón, Azpelicueta & Casciotta, 2002 | Psalidodon ita | 52391 |
| Cyanocharax itaimbe Malabarba & Weitzman, 2003 | Diapoma itaimbe | 55830 |
| Hyphessobrycon itaparicensis Lima & Costa, 2001 | Hyphessobrycon itaparicensis | 38376 |
| Oligosarcus itau Mirande, Aguilera & Azpelicueta, 2011 | Oligosarcus itau | 87714 |
| Hyphessobrycon jackrobertsi Zarske, 2014 | Hyphessobrycon jackrobertsi | 96662 |
| Astyanax jacobinae Zanata & Camelier, 2008 | Astyanax jacobinae | 79518 |
| Tetragonopterus jacuhiensis Cope, 1894 | Astyanax jacuhiensis | 38376 |
| Heterocheirodon jacuiensis Malabarba & Bertaco, 1999 | Heterocheirodon jacuiensis | 34061 |
| Oligosarcus jacuiensis Menezes & Ribeiro, 2010 | Oligosarcus jacuiensis | 85166 |
| Bryconamericus jacunda Fowler, 1913 | Knodus smithi | 38376 |
| Cheirodon jaguaribensis Fowler, 1941 | Cheirodon jaguaribensis | 48602 |
| Moenkhausia jamesi Eigenmann, 1908 | Moenkhausia jamesi | 38376 |
| Phenacogaster jancupa Malabarba & Lucena, 1995 | Phenacogaster jancupa | 26633 |
| Astyanax janeiroensis Eigenmann, 1908 | Deuterodon janeiroensis | 38376 |
| Leptobrycon jatuaranae Eigenmann, 1915 | Leptobrycon jatuaranae | 598 |
| Tetragonopterus jelskii Steindachner, 1876 | Hemibrycon jelskii | 38376 |
| Tetragonopterus jenynsii Steindachner, 1877 | Astyanax jenynsii | 38376 |
| Xiphorhamphus jenynsii Günther, 1864 | Oligosarcus jenynsii | 26282 |
| Ceratobranchia joanae Chernoff & Machado-Allison, 1990 | Ceratobranchia joanae | 28768 |
| Astyanax joaovitori Oliveira, Pavanelli & Bertaco, 2017 | Astyanax joaovitori | 116165 |
| Astyanax jordanensis Vera Alcaraz, Pavanelli & Bertaco, 2009 | Astyanax jordanensis | 81203 |
| Anoptichthys jordani Hubbs & Innes, 1936 | Astyanax jordani | 38376 |
| Tetragonopterus juruena Silva, Melo, Oliveira & Benine, 2016 | Tetragonopterus juruena | 124043 |
| Bryconexodon juruenae Géry, 1980 | Bryconexodon juruenae | 38376 |
| Cynopotamus juruenae Menezes, 1987 | Cynopotamus juruenae | 27925 |
| Moenkhausia justae Eigenmann, 1908 | Moenkhausia justae | 38376 |
| Planaltina kaingang Deprá, da Graça, Pavanelli, Avelino & Oliveira, 2018 | Planaltina kaingang | 128469 |
| Hasemania kalunga Bertaco & Carvalho, 2010 | Hasemania kalunga | 83954 |
| Hyphessobrycon kayabi Teixeira, Lima & Zuanon, 2014 | Hyphessobrycon kayabi | 94770 |
| Astyanax keithi Géry, Planquette & Le Bail, 1996 | Jupiaba keithi | 12225 |
| Astyanax kennedyi Géry, 1964 | Astyanax kennedyi | 6329 |
| Hemigrammus kennedyi Eigenmann, 1903 | Psellogrammus kennedyi | 38376 |
| Astyanax keronolepis Silva, Malabarba & Malabarba, 2019 | Astyanax keronolepis | 119398 |
| Inpaichthys kerri Géry & Junk, 1977 | Inpaichthys kerri | 38376 |
| Hyphessobrycon khardinae Zarske, 2008 | Hyphessobrycon khardinae | 75699 |
| Cheirodon kiliani Campos, 1982 | Cheirodon kiliani | 37055 |
| Cyrtocharax kincaidi Schultz, 1950 | Cynopotamus kincaidi | 36811 |
| Hyphessobrycon klausanni García-Alzate, Urbano-Bonilla & Taphorn, 2017 | Hyphessobrycon klausanni | 118102 |
| Anacyrtus knerii Steindachner, 1879 | Galeocharax knerii | 36811 |
| Astyanax kompi Hildebrand, 1938 | Astyanax kompi | 38376 |
| Monotocheirodon kontos Menezes, Weitzman & Quagio-Grassiotto, 2013 | Monotocheirodon kontos | 94699 |
| Cheirodon kriegi Schindler, 1937 | Serrapinnus kriegi | 598 |
| Astyanax kullanderi Costa, 1995 | Astyanax kullanderi | 27925 |
| Tetragonopterus kuluene Silva, Melo, Oliveira & Benine, 2016 | Tetragonopterus kuluene | 124043 |
| Creagrutus kunturus Vari, Harold & Ortega, 1995 | Creagrutus kunturus | 26628 |
| Jupiaba kurua Birindelli, Zanata, Sousa & Netto-Ferreira, 2009 | Jupiaba kurua | 80698 |
| Pseudochalceus kyburzi Schultz, 1966 | Pseudochalceus kyburzi | 38376 |
| Nematobrycon lacortei Weitzman & Fink, 1971 | Nematobrycon lacortei | 4537 |
| Tetragonopterus lacustris Lütken, 1875 | Astyanax lacustris | 38376 |
| Bryconamericus lambari Malabarba & Kindel, 1995 | Bryconamericus lambari | 33287 |
| Salmo lambari Natterer, 1859 | Psalidodon fasciatus | 38376 |
| Pterobrycon landoni Eigenmann, 1913 | Pterobrycon landoni | 38597 |
| Hyphessobrycon langeanii Lima & Moreira, 2003 | Hyphessobrycon langeanii | 52338 |
| Deuterodon langei Travassos, 1957 | Deuterodon langei | 38376 |
| Creagrutus lassoi Vari & Harold, 2001 | Creagrutus lassoi | 35140 |
| Bryconamericus lassorum Román-Valencia, 2002 | Bryconamericus lassorum | 50838 |
| Astyanax latens Mirande, Aguilera & Azpelicueta, 2004 | Andromakhe latens | 55782 |
| Coelurichthys lateralis Nichols, 1913 | Mimagoniates lateralis | 26282 |
| Tetragonopterus laticeps (non Cope, 1894) | Astyanax scabripinnis | 38376 |
| Tetragonopterus laticeps Cope, 1894 | Astyanax laticeps | 54621 |
| Landonia latidens Eigenmann & Henn, 1914 | Landonia latidens | 598 |
| Moenkhausia latissima Eigenmann, 1908 | Moenkhausia latissima | 38376 |
| Microgenys lativirgata Pearson, 1927 | Microgenys lativirgata | 38376 |
| Hyphessobrycon latus Fowler, 1941 | Hyphessobrycon latus | 598 |
| Tetragonopterus lemniscatus Benine, Pelição & Vari, 2004 | Tetragonopterus rarus | 86682 |
| Astyanax leonidas Azpelicueta, Casciotta & Almirón, 2002 | Psalidodon leonidas | 46822 |
| Astyanax leopoldi Géry, Planquette & Le Bail, 1988 | Astyanax leopoldi | 12225 |
| Cyanocharax lepiclastus Malabarba, Weitzman & Casciotta, 2003 | Diapoma lepiclastum | 55830 |
| Moenkhausia lepidura hasemani Eigenmann, 1917 | Moenkhausia hasemani | 38376 |
| Moenkhausia lepidura madeirae Fowler, 1913 | Moenkhausia intermedia | 38376 |
| Tetragonopterus lepidurus Kner, 1858 | Moenkhausia lepidura | 38376 |
| Moenkhausia lepidurus gracilimus Eigenmann, 1908 | Moenkhausia gracilima | 38376 |
| Moenkhausia lepidurus icae Eigenmann, 1908 | Moenkhausia icae | 26282 |
| Moenkhausia lepidurus icae (non Eigenmann, 1908) | Moenkhausia lepidura | 85074 |
| Moenkhausia lepidurus latus Eigenmann, 1908 | Moenkhausia lata | 38376 |
| Creagrutus lepidus Vari, Harold, Lasso & Machado-Allison, 1993 | Creagrutus lepidus | 26732 |
| Hypobrycon leptorhynchus da Silva & Malabarba, 1996 | Hypobrycon leptorhynchus | 38376 |
| Spintherobolus leptoura Weitzman & Malabarba, 1999 | Spintherobolus leptoura | 32783 |
| Odontostoechus lethostigmus Gomes, 1947 | Odontostoechus lethostigmus | 38376 |
| Charax leticiae Lucena, 1987 | Charax leticiae | 27925 |
| Cheirodon leuciscus Ahl, 1936 | Cheirodon interruptus | 37055 |
| Creagrutus leuciscus Regan, 1913 | Creagrutus affinis | 28667 |
| Moenkhausia levidorsa Benine, 2002 | Moenkhausia levidorsa | 46237 |
| Hemigrammus levis Durbin, 1908 | Hemigrammus levis | 38376 |
| Anacrytus limaesquamis Cope, 1878 | Cynopotamus amazonum | 36811 |
| Axelrodia lindeae (non Géry, 1973) | Amazonichthys camelierae | 130247 |
| Axelrodia lindeae (non Géry, 1973) | Amazonichthys lu | 130247 |
| Axelrodia lindeae Géry, 1973 | Amazonichthys lindeae | 130247 |
| Pseudochalceus lineatus Kner, 1863 | Pseudochalceus lineatus | 38376 |
| Tetragonopterus lineatus Perugia, 1891 | Astyanax lineatus | 38376 |
| Tetragonopterus lineatus Steindachner, 1891 | Bario steindachneri | 38376 |
| Moenkhausia lineomaculata Dagosta, Marinho & Benine, 2015 | Moenkhausia lineomaculata | 104871 |
| Tetragonopterus linnaei Valenciennes, 1850 | Astyanax bimaculatus | 38376 |
| Roeboides loftini Lucena, 2011 | Roeboides loftini | 87931 |
| Bryconamericus loisae Géry, 1964 | Bryconamericus loisae | 598 |
| Creagrutus londonoi Fowler, 1945 | Creagrutus affinis | 28667 |
| Pseudochalceus longianalis Géry, 1972 | Pseudochalceus longianalis | 38376 |
| Tetragonopterus longior Cope, 1878 | Astyanax longior | 38376 |
| Tetragonopterus longipinnis Popta, 1901 | Poptella longipinnis | 36891 |
| Astyanax longirhinus Garavello & Sampaio, 2010 | Astyanax longirhinus | 85756 |
| Oligosarcus longirostris Menezes & Géry, 1983 | Oligosarcus longirostris | 27925 |
| Knodus longus Zarske & Géry, 2006 | Knodus longus | 57791 |
| Moenkhausia lopesi Britski & de Silimon, 2001 | Moenkhausia lopesi | 38376 |
| Hyphessobrycon loretoensis Ladiges, 1938 | Hyphessobrycon loretoensis | 6329 |
| Astyanax lorien Zanata, Burger & Camelier, 2018 | Astyanax lorien | 129195 |
| Hyphessobrycon loweae Costa & Géry, 1994 | Hyphessobrycon loweae | 72430 |
| Moenkhausia loweae Géry, 1992 | Moenkhausia loweae | 27925 |
| Amazonichthys lu Esguícero & Mendonça, 2023 | Amazonichthys lu | 130247 |
| Phenacogaster lucenae Souza, Mattox, Vita, Ochoa, Melo & Oliveira, 2023 | Phenacogaster lucenae | 128855 |
| Serrapinnus lucindai Jerep & Malabarba, 2014 | Serrapinnus lucindai | 96959 |
| Cheirodon luelingi Géry, 1964 | Cheirodon luelingi | 48602 |
| Hemigrammus luelingi Géry, 1964 | Hemigrammus luelingi | 6329 |
| Tetragonopterus luetkenii Boulenger, 1887 | Deuterodon luetkenii | 26282 |
| Hemigrammus lunatus Durbin, 1918 | Hemigrammus lunatus | 96864 |
| Astyanax macal Schmitter-Soto, 2017 | Astyanax macal | 118583 |
| Bryconamericus macarenae Román-Valencia, García-Alzate, Ruiz-C. & Taphorn, 2010 | Bryconamericus macarenae | 86277 |
| Creagrutus machadoi Vari & Harold, 2001 | Creagrutus machadoi | 35140 |
| Hemigrammus machadoi Ota, Lima & Pavanelli, 2014 | Hemigrammus machadoi | 96864 |
| Scissor macrocephalus Günther, 1864 | Scissor macrocephalus | 38376 |
| Epicyrtus macrolepis Kner, 1858 | Charax macrolepis | 36811 |
| Epicyrtus macrolepis (non Kner, 1858) | Charax gibbosus | 4537 |
| Roeboides macrolepis Meek & Hildebrand, 1913 | Phenagoniates macrolepis | 38376 |
| Xiphorhamphus macrolepis Steindachner, 1877 | Oligosarcus macrolepis | 35506 |
| Bryconamericus macrophthalmus Román-Valencia, 2003 | Bryconamericus macrophthalmus | 99308 |
| Tetragonopterus macrophthalmus Regan, 1908 | Psalidodon fasciatus | 38376 |
| Cyanocharax macropinna Malabarba & Weitzman, 2003 | Diapoma uruguayense | 54760 |
| Cheirodon macropterus Fowler, 1941 | Serrapinnus piaba | 598 |
| Xenurobrycon macropus Myers & Miranda Ribeiro, 1945 | Xenurobrycon macropus | 598 |
| Tetragonopterus maculatus Müller & Troschel, 1845 | Astyanax bimaculatus | 38376 |
| Hyphessobrycon maculicauda Ahl, 1936 | Hyphessobrycon maculicauda | 598 |
| Astyanax maculisquamis Garutti & Britski, 1997 | Astyanax maculisquamis | 38376 |
| Phenacogaster maculoblonga Lucena & Malabarba, 2010 | Phenacogaster maculoblonga | 117026 |
| Acestrocephalus maculosus Menezes, 2006 | Acestrocephalus maculosus | 75890 |
| Creagrutus maculosus Román-Valencia, García-Alzate, Ruiz-C. & Taphorn, 2010 | Creagrutus maculosus | 84030 |
| Cheirodon madeirae Eigenmann, 1915 | Serrapinnus micropterus | 34064 |
| Odontostilbe madeirae Fowler, 1913 | Odontostilbe fugitiva | 598 |
| Prionobrama madeirae Fowler, 1913 | Prionobrama filigera | 38376 |
| Tyttocharax madeirae Fowler, 1913 | Tyttocharax madeirae | 38597 |
| Anacyrtus magdalenae Steindachner, 1879 | Cynopotamus magdalenae | 36811 |
| Astyanax magdalenae Eigenmann & Henn, 1916 | Astyanax magdalenae | 28768 |
| Creagrutus magdalenae Eigenmann, 1913 | Creagrutus magdalenae | 28667 |
| Roeboides magdalenae Eigenmann, 1922 | Roeboides dayi | 34412 |
| Cyrtocharax magdalenae venezuelae Schultz, 1944 | Cynopotamus venezuelae | 36811 |
| Bryconamericus magdalenensis Eigenmann, 1913 | Argopleura magdalenensis | 26282 |
| Creagrutus magoi Vari & Harold, 2001 | Creagrutus magoi | 35140 |
| Serrabrycon magoi Vari, 1986 | Serrabrycon magoi | 28768 |
| Hemigrammus mahnerti Uj & Géry, 1989 | Hemigrammus mahnerti | 38376 |
| Gephyrocharax major Myers, 1929 | Gephyrocharax major | 33021 |
| Tetragonopterus manaos Urbanski, Melo, Silva & Benine, 2018 | Tetragonopterus manaos | 118360 |
| Creagrutus manu Vari & Harold, 2001 | Creagrutus manu | 35140 |
| Creagrutops maracaiboensis Schultz, 1944 | Creagrutus maracaiboensis | 28667 |
| Tyttobrycon marajoara Marinho, Bastos & Menezes, 2013 | Tyttobrycon marajoara | 94718 |
| Hemibrycon marciae Godoy, 1971 | Oligosarcus pintoi | 38376 |
| Roeboides margareteae Lucena, 2003 | Roeboides margareteae | 57858 |
| Hasemania marginata Meinken, 1938 | Hasemania nana | 38376 |
| Hemigrammus marginatus Ellis, 1911 | Hemigrammus marginatus | 38376 |
| Hyphessobrycon margitae Zarske, 2016 | Hyphessobrycon margitae | 123638 |
| Moenkhausia margitae Zarske & Géry, 2001 | Moenkhausia margitae | 38376 |
| Astyanax marionae Eigenmann, 1911 | Psalidodon marionae | 38376 |
| Hypobrycon maromba Malabarba & Malabarba, 1994 | Hypobrycon maromba | 26618 |
| Astyanax maroniensis Géry, Planquette & Le Bail, 1996 | Jupiaba maroniensis | 12225 |
| Gephyrocharax martae Dahl, 1943 | Gephyrocharax martae | 38597 |
| Priocharax marupiara Mattox, Britz, Souza, Casas, Lima & Oliveira, 2023 | Priocharax marupiara | 128833 |
| Hemigrammus matei Eigenmann, 1918 | Hemigrammus matei | 38376 |
| Hyphessobrycon mavro García-Alzate, Román-Valencia & Prada-Pedreros, 2010 | Hyphessobrycon mavro | 85795 |
| Aphyocarax maxillaris Ulrey, 1894 | Pristella maxillaris | 37055 |
| Creagrudite maxillaris Myers, 1927 | Creagrutus maxillaris | 598 |
| Hasemania maxillaris Ellis, 1911 | Hasemania maxillaris | 38376 |
| Hyphessobrycon maxillaris Fowler, 1932 | Hemigrammus lunatus | 96864 |
| Tetragonopterus maximus Steindachner, 1876 | Astyanax maximus | 38376 |
| Oligosarcus meadi Menezes, 1969 | Oligosarcus argenteus | 35506 |
| Roeboides meeki Eigenmann, 1922 | Roeboides dayi | 34412 |
| Hemigrammus megaceps Fowler, 1945 | Hemigrammus megaceps | 38376 |
| Bryconamericus megalepis Fowler, 1941 | Bryconamericus megalepis | 598 |
| Astyanax megalops Eigenmann, 1907 | Moenkhausia megalops | 598 |
| Knodus megalops Myers, 1929 | Knodus megalops | 6329 |
| Megalamphodus megalopterus Eigenmann, 1915 | Hyphessobrycon megalopterus | 38376 |
| Phenacogaster megalostictus Eigenmann, 1909 | Phenacogaster megalostictus | 36811 |
| Hysteronotus megalostomus Eigenmann, 1911 | Hysteronotus megalostomus | 30296 |
| Astyanax megaspilura Fowler, 1944 | Astyanax megaspilura | 38376 |
| Cheirodon meinkeni Ahl, 1928 | Cheirodon interruptus | 37055 |
| Odontostilbe melandetus Eigenmann, 1912 | Aphyocharacidium melandetum | 12965 |
| Gephyrocharax melanocheir Eigenmann, 1912 | Gephyrocharax melanocheir | 28768 |
| Hemigrammus melanochrous Fowler, 1913 | Hemigrammus melanochrous | 38376 |
| Glandulocauda melanogenys Eigenmann, 1911 | Glandulocauda melanopleura | 82395 |
| Acinocheirodon melanogramma Malabarba & Weitzman, 1999 | Acinocheirodon melanogramma | 34062 |
| Glandulocauda melanopleura Eigenmann, 1911 | Glandulocauda caerulea | 82395 |
| Hyphessobrycon melanopleurus Ellis, 1911 | Glandulocauda melanopleura | 82395 |
| Hyphessobrycon melanopleurus uruguayensis Messner, 1962 | Diapoma uruguayense | 54736 |
| Hyphessobrycon melanostichos Carvalho & Bertaco, 2006 | Hyphessobrycon melanostichos | 57598 |
| Saccoderma melanostigma Schultz, 1944 | Saccoderma melanostigma | 37055 |
| Aphyocharax melanotus Eigenmann, 1912 | Microschemobrycon melanotus | 38376 |
| Prodontocharax melanotus Pearson, 1924 | Prodontocharax melanotus | 6329 |
| Hasemania melanura Ellis, 1911 | Hasemania melanura | 38376 |
| Creagrutus melanzonus Eigenmann, 1909 | Creagrutus melanzonus | 38376 |
| Hyphessobrycon melasemeion Fowler, 1945 | Hyphessobrycon melasemeion | 38376 |
| Creagrutus melasma Vari, Harold & Taphorn, 1994 | Creagrutus melasma | 38376 |
| Hemigrammus melasopterus Eigenmann & Kennedy, 1903 | Hyphessobrycon eques | 13676 |
| Hyphessobrycon melazonatus Durbin, 1908 | Hyphessobrycon melazonatus | 598 |
| Moenkhausia melogramma Eigenmann, 1908 | Moenkhausia melogramma | 38376 |
| Creagrutus menezesi Vari & Harold, 2001 | Creagrutus menezesi | 35140 |
| Oligosarcus menezesi Miquelarena & Protogino, 1996 | Oligosarcus menezesi | 38376 |
| Bryconamericus mennii Miquelarena, Protogino, Filiberto & López, 2002 | Bryconamericus mennii | 38376 |
| Knodus meridae Eigenmann, 1911 | Knodus meridae | 38376 |
| Creagrutus meridionalis Vari & Harold, 2001 | Creagrutus meridionalis | 35140 |
| Hyphessobrycon meridionalis Ringuelet, Miquelarena & Menni, 1978 | Hyphessobrycon meridionalis | 38376 |
| Astyanax metae Eigenmann, 1914 | Astyanax maximus | 38376 |
| Charax metae Eigenmann, 1922 | Charax metae | 36811 |
| Hemibrycon metae Myers, 1930 | Hemibrycon metae | 38376 |
| Hyphessobrycon metae (non Eigenmann & Henn, 1914) | Hyphessobrycon clavatus | 105293 |
| Hyphessobrycon metae Eigenmann & Henn, 1914 | Hyphessobrycon metae | 598 |
| Moenkhausia metae Eigenmann, 1922 | Moenkhausia metae | 38376 |
| Tyttocharax metae Román-Valencia, García-Alzate, Ruiz-C. & Taphorn, 2012 | Tyttocharax metae | 91745 |
| Astyanax meunieri Géry, Planquette & Le Bail, 1996 | Jupiaba meunieri | 12225 |
| Tetragonopterus mexicanus De Filippi, 1853 | Astyanax mexicanus | 38376 |
| Microschemobrycon meyburgi Meinken, 1975 | Microschemobrycon meyburgi | 38376 |
| Moenkhausia miangi Steindachner, 1915 | Moenkhausia miangi | 38376 |
| Charax michaeli Lucena, 1989 | Charax michaeli | 27925 |
| Odontostilbe microcephala Eigenmann, 1907 | Odontostilbe microcephala | 598 |
| Astyanax microcephalus Miranda Ribeiro, 1908 | Bryconamericus microcephalus | 598 |
| Cheirodon microdon Eigenmann, 1915 | Serrapinnus microdon | 598 |
| Hemibrycon microformaa Román-Valencia & Ruiz-C., 2007 | Hemibrycon microformaa | 58761 |
| Acanthocharax microlepis Eigenmann, 1912 | Acanthocharax microlepis | 28768 |
| Astyanax microlepis Eigenmann, 1913 | Astyanax microlepis | 38376 |
| Epicyrtus microlepis Kner, 1858 | Roeboides microlepis | 34414 |
| Epicyrtus microlepis Reinhardt, 1851 | Roeboides microlepis | 26282 |
| Paragoniates microlepis Steindachner, 1877 | Mimagoniates microlepis | 58462 |
| Tetragonopterus microphthalmus Günther, 1864 | Psalidodon fasciatus | 38376 |
| Cheirodon micropterus (non Eigenmann, 1907) | Serrapinnus piaba | 32783 |
| Cheirodon micropterus Eigenmann, 1907 | Serrapinnus micropterus | 34064 |
| Hemigrammus micropterus Meek, 1907 | Hemigrammus micropterus | 38376 |
| Megalamphodus micropterus Eigenmann, 1915 | Hyphessobrycon micropterus | 13676 |
| Hemigrammus micropterus boesemani Géry, 1959 | Hemigrammus boesemani | 38376 |
| Astyanax microschemos Bertaco & Lucena, 2006 | Astyanax microschemos | 57404 |
| Phenacogaster microstictus Eigenmann, 1909 | Phenacogaster microstictus | 598 |
| Hemigrammus microstomus Durbin, 1918 | Hemigrammus microstomus | 38376 |
| Oligobrycon microstomus Eigenmann, 1915 | Oligobrycon microstomus | 38376 |
| Moenkhausia mikia Marinho & Langeani, 2010 | Moenkhausia mikia | 85074 |
| Hemibrycon mikrostiktos Bertaco & Malabarba, 2010 | Hemibrycon mikrostiktos | 85819 |
| Hemigrammus mimus Böhlke, 1955 | Hemigrammus mimus | 38376 |
| Hyphessobrycon minimus Durbin, 1909 | Hyphessobrycon minimus | 598 |
| Astyanax minor Garavello & Sampaio, 2010 | Astyanax minor | 85756 |
| Deuterodon minor Travassos, 1964 | Jupiaba minor | 38376 |
| Hyphessobrycon minor Durbin, 1909 | Hyphessobrycon minor | 598 |
| Rhoadsia minor Eigenmann & Henn, 1914 | Rhoadsia minor | 38501 |
| Microgenys minuta Eigenmann, 1913 | Microgenys minuta | 38376 |
| Hemigrammus minutus Meek & Hildebrand, 1912 | Hyphessobrycon panamensis | 13676 |
| Microbrycon minutus Eigenmann & Wilson, 1914 | Pterobrycon landoni | 38597 |
| Bryconamericus miraensis Fowler, 1945 | Bryconamericus miraensis | 38376 |
| Cheirodon mitopterus Fink & Weitzman, 1974 | Odontostilbe mitoptera | 598 |
| Astyanax mizquae Fowler, 1943 | Knodus mizquae | 26282 |
| Poecilurichthys moenkhausii Eigenmann & Kennedy, 1903 | Knodus moenkhausii | 26282 |
| Moenkhausia moisae Géry, Planquette & Le Bail, 1995 | Moenkhausia moisae | 38376 |
| Creagrutus molinus Vari & Harold, 2001 | Creagrutus molinus | 35140 |
| Hyphessobrycon moniliger Moreira, Lima & Costa, 2002 | Hyphessobrycon moniliger | 42938 |
| Cheirodon monodon Cope, 1894 | Cheirodon interruptus | 37055 |
| Hyphessobrycon montagi Lima, Coutinho & Wosiacki, 2014 | Hyphessobrycon montagi | 97524 |
| Tetragonopterus moorii Boulenger, 1892 | Astyanax moorii | 38376 |
| Creagrutus mucipu Vari & Harold, 2001 | Creagrutus mucipu | 35140 |
| Astyanax mucronatus Eigenmann, 1909 | Jupiaba mucronata | 38376 |
| Leporinus muelleri Günther, 1859 | Creagrutus muelleri | 598 |
| Astyanacinus multidens Pearson, 1924 | Astyanax multidens | 38376 |
| Astyanax multidens Eigenmann, 1908 | Makunaima multidens | 38376 |
| Tetragonopterus multifasciatus Eigenmann & Norris, 1900 | Hollandichthys multifasciatus | 38376 |
| Bryconamericus multiradiatus Dahl, 1960 | Bryconamericus multiradiatus | 598 |
| Tetragonopterus multiradiatus Steindachner, 1876 | Ctenobrycon multiradiatus | 38376 |
| Hyphessobrycon mutabilis Costa & Géry, 1994 | Hyphessobrycon mutabilis | 72430 |
| Astyanax mutator Eigenmann, 1909 | Deuterodon mutator | 38376 |
| Moenkhausia mutum Dagosta & Marinho, 2016 | Moenkhausia mutum | 109750 |
| Brittanichthys myersi Géry, 1965 | Brittanichthys myersi | 598 |
| Hysteronotus myersi Weitzman & Thomerson, 1970 | Chrysobrycon myersi | 6329 |
| Planaltina myersi Böhlke, 1954 | Planaltina myersi | 598 |
| Poecilurichthys myersi Fernández-Yépez, 1950 | Astyanax myersi | 38376 |
| Rhinopetitia myersi Géry, 1964 | Rhinopetitia myersi | 598 |
| Raeboides myersii Gill, 1870 | Roeboides myersii | 36811 |
| Roeboides myersii Gill, 1870 | Roeboides myersii | 36811 |
| Hyphessobrycon myrmex Pastana, Dagosta & Esguícero, 2017 | Hyphessobrycon myrmex | 128641 |
| Pterobrycon myrnae Bussing, 1974 | Pterobrycon myrnae | 38597 |
| Hasemania nambiquara Bertaco & Malabarba, 2007 | Hasemania nambiquara | 75743 |
| Diapoma nandi Vanegas‐Ríos, Azpelicueta & Malabarba, 2018 | Diapoma nandi | 119400 |
| Priocharax nanus Toledo-Piza, Mattox & Britz, 2014 | Priocharax nanus | 96862 |
| Tetragonopterus nanus Lütken, 1875 | Hasemania nana | 38376 |
| Phenacogaster napoatilis Lucena & Malabarba, 2010 | Phenacogaster napoatilis | 84092 |
| Moenkhausia naponis Böhlke, 1958 | Moenkhausia naponis | 38376 |
| Odontostilbe nareuda Bührnheim & Malabarba, 2006 | Odontostilbe nareuda | 57085 |
| Aphyocharax nasutus Ahl, 1936 | Aphyocharax dentatus | 38382 |
| Astyanax nasutus (non Meek, 1907) | Astyanax cocibolca | 83537 |
| Astyanax nasutus Meek, 1907 | Astyanax nasutus | 38376 |
| Creagrutus nasutus Günther, 1876 | Creagrutus peruanus | 38376 |
| Hyphessobrycon natagaima García-Alzate, Taphorn, Roman-Valencia & Villa-Navarro, 2015 | Hyphessobrycon natagaima | 118120 |
| Chirodon nattereri Steindachner, 1882 | Aphyocharax nattereri | 38382 |
| Hyphessobrycon negodagua Lima & Gerhard, 2001 | Hyphessobrycon negodagua | 40346 |
| Rhinobrycon negrensis Myers, 1944 | Rhinobrycon negrensis | 598 |
| Gymnocorymbus nemopterus Fowler, 1914 | Poptella longipinnis | 36891 |
| Hemigrammus neptunus Zarske & Géry, 2002 | Hemigrammus neptunus | 48393 |
| Ramirezella newboldi Fernández-Yépez, 1949 | Hemigrammus newboldi | 38376 |
| Moenkhausia newtoni Travassos, 1964 | Moenkhausia newtoni | 38376 |
| Hyphessobrycon nicolasi Miquelarena & López, 2010 | Hyphessobrycon nicolasi | 83966 |
| Charax niger Lucena, 1989 | Charax niger | 27925 |
| Hyphessobrycon niger García-Alzate, Román-Valencia & Prada-Pedreros, 2010 | Hyphessobrycon niger | 85795 |
| Hyphessobrycon nigricinctus Zarske & Géry, 2004 | Hyphessobrycon nigricinctus | 57646 |
| Acestrocephalus nigrifasciatus Menezes, 2006 | Acestrocephalus nigrifasciatus | 75890 |
| Hyphessobrycon nigrifrons Ahl, 1936 | Cheirodon interruptus | 37055 |
| Tetragonopterus nigripinnis Perugia, 1891 | Markiana nigripinnis | 26282 |
| Tetragonopterus nigripinnis geayi Pellegrin, 1909 | Markiana geayi | 86870 |
| Varicharax nigrolineatus Vanegas-Ríos, Faustino-Fuster, Meza-Vargas & Ortega, 2020 | Varicharax nigrolineatus | 121996 |
| Moenkhausia nigromarginata Costa, 1994 | Moenkhausia nigromarginata | 27925 |
| Creagrutus nigrostigmatus Dahl, 1960 | Creagrutus nigrostigmatus | 28667 |
| Creagrutus nigrotaeniatus Dagosta & Pastana, 2014 | Creagrutus nigrotaeniatus | 94995 |
| Tetragonopterus nitidus Bocourt, 1868 | Astyanax mexicanus | 38376 |
| Astyanax nobre Dagosta & Marinho, 2022 | Astyanax nobre | 128856 |
| Hyphessobrycon notidanos Carvalho & Bertaco, 2006 | Hyphessobrycon notidanos | 57598 |
| Cheirodon notomelas Eigenmann, 1915 | Serrapinnus notomelas | 598 |
| Creagrutus notropoides Meek & Hildebrand, 1912 | Creagrutus affinis | 28667 |
| Charax notulatus Lucena, 1987 | Charax notulatus | 27925 |
| Bryconamericus novae Eigenmann & Henn, 1914 | Bryconamericus novae | 598 |
| Roeboides numerosus Lucena, 2000 | Roeboides numerosus | 36811 |
| Brachychalcinus nummus Böhlke, 1958 | Brachychalcinus nummus | 6329 |
| Tetragonopterus oaxacanensis Bocourt, 1868 | Psalidodon fasciatus | 38376 |
| Cyanocharax obi Casciotta, Almirón, Piálek & Říčan, 2012 | Diapoma obi | 91033 |
| Thayeria obliqua Eigenmann, 1908 | Thayeria obliqua | 38376 |
| Tetragonopterus obscurus Hensel, 1870 | Astyanax obscurus | 38376 |
| Ceratobranchia obtusirostris Eigenmann, 1914 | Ceratobranchia obtusirostris | 6329 |
| Hyphessobrycon ocasoensis García-Alzate & Román-Valencia, 2008 | Hyphessobrycon ocasoensis | 80362 |
| Creagrutus occidaneus Vari & Harold, 2001 | Creagrutus occidaneus | 35140 |
| Roeboides occidentalis Meek & Hildebrand, 1916 | Roeboides occidentalis | 36811 |
| Astyanax ocellatus Géry, Planquette & Le Bail, 1996 | Jupiaba ocellata | 12225 |
| Tetragonopterus ocellifer Steindachner, 1882 | Hemigrammus ocellifer | 38376 |
| Hemigrammus ocellifer falsus Meinken, 1958 | Hemigrammus ocellifer | 38376 |
| Hemigrammus ocellifer falsus Meinken, 1958 | Hemigrammus falsus | 101436 |
| Astyanax ocotal Valdez-Moreno, Rodiles-Hernández & Schmitter-Soto, 2017 | Astyanax ocotal | 118583 |
| Microcaelurus odontocheilus Miranda Ribeiro, 1939 | Tyttocharax madeirae | 38597 |
| Tetragonopterus oerstedii Lütken, 1875 | Astyanax orstedii | 38376 |
| Astyanax ojiara Azpelicueta & Garcia, 2000 | Psalidodon ojiara | 38376 |
| Phenacogaster ojitata Lucena & Malabarba, 2010 | Phenacogaster ojitata | 123477 |
| Roeboides oligistos Lucena, 2000 | Roeboides oligistos | 36811 |
| Tetragonopterus oligolepis Günther, 1864 | Moenkhausia oligolepis | 38376 |
| Xiphoramphus oligolepis Steindachner, 1867 | Oligosarcus oligolepis | 33021 |
| Ctenobrycon oliverai Benine, Lopes & Ron, 2010 | Ctenobrycon oliverai | 85787 |
| Tetragonopterus ommatus Silva, Melo, Oliveira & Benine, 2016 | Tetragonopterus ommatus | 124043 |
| Corynopomops opisthopterus Fowler, 1943 | Gephyrocharax chaparae | 26282 |
| Hemigrammus ora Zarske, Le Bail & Géry, 2006 | Hemigrammus ora | 57781 |
| Tetragonopterus orbicularis Valenciennes, 1850 | Brachychalcinus orbicularis | 36891 |
| Tetragonopterus orbignyanus Valenciennes, 1850 | Astyanax orbignyanus | 38376 |
| Hemibrycon orcesi Böhlke, 1958 | Hemibrycon orcesi | 38376 |
| Tetragonopterus orientalis Cope, 1870 | Astyanax bimaculatus | 38376 |
| Bryconamericus orinocoensis Román-Valencia, 2003 | Bryconamericus orinocoensis | 123477 |
| Hyphessobrycon oritoensis García-Alzate, Román-Valencia & Taphorn, 2008 | Hyphessobrycon oritoensis | 76880 |
| Bryconamericus ornaticeps Bizerril & Perez-Neto, 1995 | Bryconamericus ornaticeps | 38376 |
| Hyphessobrycon ornatus Ahl, 1934 | Hyphessobrycon rosaceus | 38376 |
| Trochilocharax ornatus Zarske, 2010 | Trochilocharax ornatus | 85054 |
| Bryconamericus oroensis Román-Valencia, Ruiz-C., Taphorn & García-A., 2013 | Bryconamericus oroensis | 93958 |
| Tetragonopterus orstedii Lütken, 1875 | Astyanax orstedii | 118583 |
| Cheirodon ortegai Vari & Géry, 1980 | Cheirodon ortegai | 6329 |
| Creagrutus ortegai Vari & Harold, 2001 | Creagrutus ortegai | 35140 |
| Bryconamericus orteguasae Fowler, 1943 | Knodus orteguasae | 38376 |
| Moenkhausia orteguasae Fowler, 1943 | Moenkhausia orteguasae | 38376 |
| Astyanax orthodus Eigenmann, 1907 | Astyanax orthodus | 119406 |
| Bryconamericus ortholepis Eigenmann, 1913 | Bryconamericus emperador | 38376 |
| Hemigrammus orthus Durbin, 1909 | Hemigrammus orthus | 38376 |
| Acrobrycon ortii Arcila, Vari & Menezes, 2014 | Acrobrycon ortii | 94771 |
| Bryconamericus osgoodi Eigenmann & Allen, 1942 | Bryconamericus osgoodi | 6329 |
| Hyphessobrycon otrynus Benine & Lopes, 2008 | Hyphessobrycon otrynus | 75593 |
| Creagrutus ouranonastes Vari & Harold, 2001 | Creagrutus ouranonastes | 35140 |
| Tetragonopterus ovalis Günther, 1868 | Moenkhausia ovalis | 38376 |
| Salmo ovatus Larrañaga, 1923 | Psalidodon rutilus | 121237 |
| Probolodus oyakawai Santos & Castro, 2014 | Deuterodon oyakawai | 96884 |
| Bryconamericus pachacuti Eigenmann, 1927 | Bryconamericus pachacuti | 6329 |
| Atopomesus pachyodus Myers, 1927 | Atopomesus pachyodus | 28768 |
| Hyphessobrycon paepkei Zarske, 2014 | Hyphessobrycon paepkei | 96662 |
| Hemibrycon paez Román-Valencia & Arcila-Mesa, 2010 | Hemibrycon paez | 83529 |
| Hemigrammus paipayensis Pearson, 1929 | Bryconacidnus paipayensis | 26282 |
| Cheirodon pallidifrons Fowler, 1946 | Bryconella pallidifrons | 26282 |
| Acestrocephalus pallidus Menezes, 2006 | Acestrocephalus pallidus | 75890 |
| Nematobrycon palmeri Eigenmann, 1911 | Nematobrycon palmeri | 38376 |
| Hemibrycon palomae Román-Valencia, García-Alzate, Ruiz-C. & Taphorn, 2010 | Hemibrycon palomae | 85101 |
| Astyanax pampa Casciotta, Almirón & Azpelicueta, 2005 | Psalidodon pampa | 56693 |
| Hyphessobrycon panamensis Durbin, 1908 | Hyphessobrycon panamensis | 13676 |
| Tetragonopterus panamensis Günther, 1864 | Astyanax panamensis | 118583 |
| Hyphessobrycon panamensis daguae Eigenmann, 1922 | Hyphessobrycon panamensis | 38376 |
| Hyphessobrycon pando Hein, 2009 | Hyphessobrycon pando | 82662 |
| Moenkhausia pankilopteryx Bertaco & Lucinda, 2006 | Moenkhausia pankilopteryx | 56145 |
| Odontostilbe pao Bührnheim & Malabarba, 2007 | Odontostilbe pao | 75063 |
| Spintherobolus papilliferus Eigenmann, 1911 | Spintherobolus papilliferus | 32783 |
| Aphyocharax pappenheimi Ahl, 1923 | Aphyocharax dentatus | 38382 |
| Exodon paradoxus Müller & Troschel, 1844 | Exodon paradoxus | 598 |
| Aphyocharax paraguayensis Eigenmann, 1915 | Aphyocharax nattereri | 38382 |
| Bertoniolus paraguayensis Fowler, 1918 | Astyanax paraguayensis | 38376 |
| Bleptonema paraguayensis Eigenmann, 1914 | Prionobrama paraguayensis | 38376 |
| Creagrutus paraguayensis Mahnert & Géry, 1988 | Creagrutus paraguayensis | 42679 |
| Fowlerina paraguayensis Eigenmann, 1907 | Poptella paraguayensis | 36891 |
| Odontostilbe paraguayensis Eigenmann & Kennedy, 1903 | Odontostilbe paraguayensis | 598 |
| Cheirodon parahybae Eigenmann, 1915 | Cheirodon parahybae | 37055 |
| Deuterodon parahybae Eigenmann, 1908 | Deuterodon parahybae | 48602 |
| Creagrutus paralacus Harold & Vari, 1994 | Creagrutus paralacus | 38376 |
| Hemigrammus parana Marinho, Carvalho, Langeani & Tatsumi, 2008 | Hemigrammus parana | 74938 |
| Astyanax paranahybae Eigenmann, 1911 | Astyanax paranahybae | 38376 |
| Jupiaba paranatinga Netto-Ferreira, Zanata, Birindelli & Sousa, 2009 | Jupiaba paranatinga | 82468 |
| Oligosarcus paranensis Menezes & Géry, 1983 | Oligosarcus paranensis | 27925 |
| Roeboides paranensis Pignalberi, 1975 | Roeboides descalvadensis | 75795 |
| Astyanax pardensis Salgado, 2021 | Astyanax pardensis | 126164 |
| Moenkhausia parecis Ohara & Marinho, 2016 | Moenkhausia parecis | 109906 |
| Odontostilbe parecis Bührnheim & Malabarba, 2006 | Odontostilbe parecis | 57085 |
| Astyanax paris Azpelicueta, Almirón & Casciotta, 2002 | Andromakhe paris | 46822 |
| Brachychalcinus parnaibae Reis, 1989 | Brachychalcinus parnaibae | 27925 |
| Hyphessobrycon parvellus Ellis, 1911 | Hyphessobrycon parvellus | 38376 |
| Oxybrycon parvulus Géry, 1964 | Oxybrycon parvulus | 6329 |
| Knodus pasco Zarske, 2007 | Knodus pasco | 58757 |
| Bryconamericus patriciae da Silva, 2004 | Bryconamericus patriciae | 54750 |
| Hyphessobrycon paucilepis García-Alzate, Román-Valencia & Taphorn, 2008 | Hyphessobrycon paucilepis | 79635 |
| Anacyrtus pauciradiatus Günther, 1864 | Charax pauciradiatus | 36811 |
| Hemibrycon pautensis Román-Valencia, Ruiz C. & Barriga, 2006 | Hemibrycon polyodon | 85819 |
| Creagrutus pearsoni Mahnert & Géry, 1988 | Creagrutus pearsoni | 38376 |
| Monotocheirodon pearsoni Eigenmann, 1924 | Monotocheirodon pearsoni | 598 |
| Bryconamericus pectinatus Vari & Siebert, 1990 | Bryconamericus pectinatus | 38376 |
| Thrissobrycon pectinifer Böhlke, 1953 | Thrissobrycon pectinifer | 28768 |
| Deuterodon pedri Eigenmann, 1908 | Astyanax pedri | 598 |
| Astyanax pelecus Bertaco & Lucena, 2006 | Deuterodon pelecus | 57404 |
| Astyanax pellegrini Eigenmann, 1907 | Psalidodon pellegrini | 84081 |
| Chirodon pequira Steindachner, 1882 | Odontostilbe pequira | 37055 |
| Oligosarcus perdido Ribeiro, Cavallaro & Froehlich, 2007 | Oligosarcus perdido | 72405 |
| Pseudochalceus perstriatus Miranda Ribeiro, 1908 | Hollandichthys multifasciatus | 38376 |
| Piabina peruana Steindachner, 1876 | Creagrutus peruanus | 38376 |
| Tetragonopterus peruanus Müller & Troschel, 1845 | Bryconamericus peruanus | 36656 |
| Bryconamericus peruanus ricae Eigenmann, 1908 | Bryconamericus scleroparius | 38376 |
| Hyphessobrycon peruvianus Ladiges, 1938 | Hyphessobrycon peruvianus | 6329 |
| Hyphessobrycon peruvianus (non Ladiges, 1938) | Hyphessobrycon clavatus | 105293 |
| Tetragonopterus petenensis Günther, 1864 | Astyanax petenensis | 118583 |
| Creagrutus petilus Vari & Harold, 2001 | Creagrutus petilus | 35140 |
| Moenkhausia petymbuaba Lima & Birindelli, 2006 | Moenkhausia petymbuaba | 56956 |
| Hyphessobrycon peugeotorum Ingenito, Lima & Buckup, 2013 | Hyphessobrycon peugeotorum | 123477 |
| Moenkhausia phaeonota Fink, 1979 | Moenkhausia phaeonota | 27925 |
| Creagrutus phasma Myers, 1927 | Creagrutus phasma | 598 |
| Tetragonopterus phoenicopterus Cope, 1872 | Bryconamericus phoenicopterus | 26282 |
| Leptagoniates pi Vari, 1978 | Protocheirodon pi | 109753 |
| Cheirodon piaba Lütken, 1875 | Serrapinnus piaba | 26282 |
| Hyphessobrycon piabinhas Fowler, 1941 | Hyphessobrycon piabinhas | 598 |
| Hasemania piatan Zanata & Serra, 2010 | Hasemania piatan | 83965 |
| Creagrutus pila Vari & Harold, 2001 | Creagrutus pila | 35140 |
| Deuterodon pinnatus Eigenmann, 1909 | Jupiaba pinnata | 38376 |
| Bryconamericus pinnavittatus Dagosta & Netto-Ferreira, 2015 | Bryconamericus pinnavittatus | 99308 |
| Hyphessobrycon pinnistriatus Carvalho, Cabeceira & Carvalho, 2017 | Hyphessobrycon pinnistriatus | 118106 |
| Oligosarcus pintoi Amaral Campos, 1945 | Oligosarcus pintoi | 27925 |
| Piabina piquira Eigenmann, 1910 | Piabina argentea | 38376 |
| Astyanax pirabitira Lucena, Bertaco & Berbigier, 2013 | Astyanax pirabitira | 94017 |
| Jupiaba pirana Zanata, 1997 | Jupiaba pirana | 38376 |
| Hyphessobrycon piranga Camelier, Dagosta & Marinho, 2018 | Hyphessobrycon piranga | 119665 |
| Astyanax pirapuan Tagliacollo, Britzke, Silva & Benine, 2011 | Astyanax pirapuan | 86404 |
| Moenkhausia pirauba Zanata, Birindelli & Moreira, 2010 | Moenkhausia pirauba | 83482 |
| Cheirodon pisciculus Girard, 1855 | Cheirodon pisciculus | 37055 |
| Moenkhausia pittieri Eigenmann, 1920 | Moenkhausia pittieri | 38376 |
| Oligosarcus planaltinae Menezes & Géry, 1983 | Oligosarcus planaltinae | 27925 |
| Creagrutus planquettei Géry & Renno, 1989 | Creagrutus planquettei | 12225 |
| Astyanacinus platensis Messner, 1962 | Oligosarcus platensis | 54760 |
| Tetragonopterus pliodus Cope, 1894 | Bryconamericus iheringii | 33287 |
| Moenkhausia plumbea Sousa, Netto-Ferreira & Birindelli, 2010 | Moenkhausia plumbea | 84462 |
| Bryconamericus plutarcoi Román-Valencia, 2001 | Bryconamericus plutarcoi | 38376 |
| Hyphessobrycon poecilioides Eigenmann, 1913 | Hyphessobrycon poecilioides | 598 |
| Jupiaba poekotero Zanata & Lima, 2005 | Jupiaba poekotero | 54762 |
| Astyanax poetzschkei Ahl, 1932 | Astyanax poetzschkei | 38376 |
| Hypobrycon poi Almirón, Casciotta, Azpelicueta & Cione, 2001 | Bryconamericus poi | 123255 |
| Xenurobrycon polyancistrus Weitzman, 1987 | Xenurobrycon polyancistrus | 26646 |
| Tetragonopterus polylepis Günther, 1864 | Jupiaba polylepis | 38376 |
| Tetragonopterus polyodon Günther, 1864 | Hemibrycon polyodon | 38376 |
| Jupiaba poranga Zanata, 1997 | Jupiaba poranga | 38376 |
| Rhinopetitia potamorhachia Netto-Ferreira, Birindelli, Sousa & Menezes, 2014 | Rhinopetitia potamorhachia | 111429 |
| Astyanax potaroensis Eigenmann, 1909 | Jupiaba potaroensis | 38376 |
| Deuterodon potaroensis Eigenmann, 1909 | Deuterodon potaroensis | 48602 |
| Serrapinnus potiguar Jerep & Malabarba, 2014 | Serrapinnus potiguar | 96867 |
| Astyanax powelli Terán, Butí & Mirande, 2017 | Psalidodon powelli | 124081 |
| Iotabrycon praecox Roberts, 1973 | Iotabrycon praecox | 598 |
| Hemigrammus pretoensis Géry, 1965 | Hemigrammus pretoensis | 38376 |
| Ctenocheirodon pristis Malabarba & Jerep, 2012 | Ctenocheirodon pristis | 91049 |
| Astyanax procerus Lucena, Castro & Bertaco, 2013 | Astyanax procerus | 94153 |
| Hyphessobrycon procerus Mahnert & Géry, 1987 | Hyphessobrycon procerus | 27925 |
| Hyphessobrycon procyon Pastana & Ohara, 2016 | Hyphessobrycon procyon | 128639 |
| Moenkhausia profunda (non Eigenmann, 1912) | Gymnocorymbus thayeri | 101636 |
| Moenkhausia profunda Eigenmann, 1912 | Gymnocorymbus bondi | 101636 |
| Anacyrtus prognathus Boulenger, 1895 | Roeboides prognathus | 36811 |
| Phenacogaster prolata Lucena & Malabarba, 2010 | Phenacogaster prolata | 123477 |
| Hemigrammus proneki Géry, 1963 | Hemigrammus schmardae | 38376 |
| Hyphessobrycon proteus Eigenmann, 1913 | Hyphessobrycon proteus | 598 |
| Creagrutus provenzanoi Vari & Harold, 2001 | Creagrutus provenzanoi | 35140 |
| Xenurobrycon pteropus Weitzman & Fink, 1985 | Xenurobrycon pteropus | 27925 |
| Astyanax puka Mirande, Aguilera & Azpelicueta, 2007 | Psalidodon puka | 72407 |
| Chirodon pulcher Steindachner, 1882 | Aphyocharax nattereri | 38382 |
| Hemigrammus pulcher Ladiges, 1938 | Hemigrammus pulcher | 38376 |
| Mimagoniates pulcher Menezes & Weitzman, 2009 | Mimagoniates pulcher | 82395 |
| Poecilurichthys pulcher Gill, 1858 | Odontostilbe pulchra | 75063 |
| Hemigrammus pulcher haraldi Géry, 1961 | Hemigrammus haraldi | 38376 |
| Hyphessobrycon pulchripinnis Ahl, 1937 | Hyphessobrycon pulchripinnis | 38376 |
| Parastremma pulchrum Dahl, 1960 | Parastremma pulchrum | 38501 |
| Acestrorhamphus purpureus Messner, 1962 | Oligosarcus jenynsii | 38376 |
| Aphyocharax pusillus Günther, 1868 | Aphyocharax pusillus | 38382 |
| Bryconamericus pyahu Azpelicueta, Casciotta & Almirón, 2003 | Bryconamericus pyahu | 56308 |
| Priocharax pygmaeus Weitzman & Vari, 1987 | Priocharax pygmaeus | 28825 |
| Astyanax pynandi Casciotta, Almirón, Bechara, Roux & Ruíz Díaz, 2003 | Psalidodon pynandi | 55824 |
| Moenkhausia pyrophthalma Costa, 1994 | Moenkhausia pyrophthalma | 27925 |
| Hyphessobrycon pyrrhonotus Burgess, 1993 | Hyphessobrycon pyrrhonotus | 13676 |
| Diapoma pyrrhopteryx Menezes & Weitzman, 2011 | Diapoma pyrrhopteryx | 86734 |
| Hyphessobrycon pytai Géry & Mahnert, 1993 | Hyphessobrycon pytai | 38376 |
| Hemibrycon quindos Román-Valencia & Arcila-Mesa, 2010 | Hemibrycon quindos | 83529 |
| Grundulus quitoensis Román-Valencia, Ruiz C. & Barriga, 2005 | Grundulus quitoensis | 56944 |
| Hemibrycon rafaelensis Román-Valencia & Arcila-Mesa, 2008 | Hemibrycon rafaelensis | 123477 |
| Hemibrycon raqueliae Román-Valencia & Arcila-Mesa, 2010 | Hemibrycon raqueliae | 83529 |
| Moenkhausia rara Zarske, Géry & Isbrücker, 2004 | Tetragonopterus rarus | 86682 |
| Phycocharax rasbora Ohara, Mirande & Lima, 2017 | Phycocharax rasbora | 116744 |
| Aphyocharax rathbuni Eigenmann, 1907 | Aphyocharax rathbuni | 38382 |
| Astyanax regani Meek, 1909 | Psalidodon fasciatus | 38376 |
| Brachychalcinus reisi Garcia-Ayala, Ohara, Pastana & Benine, 2017 | Brachychalcinus reisi | 118114 |
| Hyphessobrycon reticulatus Ellis, 1911 | Hyphessobrycon reticulatus | 598 |
| Phenacogaster retropinnus Lucena & Malabarba, 2010 | Phenacogaster retropinnus | 84092 |
| Brachychalcinus retrospina Boulenger, 1892 | Brachychalcinus retrospina | 36891 |
| Ctenobrycon rhabdops Fowler, 1913 | Ctenobrycon hauxwellianus | 38376 |
| Mimagoniates rheocharis Menezes & Weitzman, 1990 | Mimagoniates rheocharis | 27925 |
| Hyphessobrycon rheophilus Ohara, Teixeira, Albornoz-Garzón, Mirande & Lima, 2019 | Hyphessobrycon rheophilus | 121599 |
| Tyttocharax rhinodus Böhlke, 1958 | Scopaeocharax rhinodus | 26282 |
| Hemigrammus rhodostomus Ahl, 1924 | Petitella rhodostoma | 38376 |
| Ptychocharax rhyacophila Weitzman, Fink, Machado-Allison & Royero L., 1994 | Ptychocharax rhyacophila | 26734 |
| Astyanax ribeirae Eigenmann, 1911 | Deuterodon ribeirae | 38376 |
| Cheirodon ribeiroi Eigenmann, 1907 | Mixobrycon ribeiroi | 38376 |
| Holopristis riddlei Meek, 1907 | Pristella maxillaris | 13676 |
| Axelrodia riesei Géry, 1966 | Axelrodia riesei | 38376 |
| Corynopoma riisei Gill, 1858 | Corynopoma riisei | 4537 |
| Astyanax rioverde Lozano-Vilano & Schmitter-Soto, 2017 | Astyanax rioverde | 118583 |
| Tetragonopterus rivularis Lütken, 1875 | Psalidodon rivularis | 38376 |
| Hyphessobrycon robertsi Anonymous [Axelrod], 1958 | Hyphessobrycon bentosi | 13676 |
| Moenkhausia robertsi Géry, 1964 | Moenkhausia robertsi | 38376 |
| Saccoderma robusta Dahl, 1955 | Saccoderma robusta | 598 |
| Hemigrammus robustulus Cope, 1870 | Hyphessobrycon robustulus | 7442 |
| Astyanax robustus Meek, 1912 | Astyanax robustus | 38376 |
| Oligosarcus robustus Menezes, 1969 | Oligosarcus robustus | 27925 |
| Hemigrammus rodwayi Durbin, 1909 | Hemigrammus rodwayi | 38376 |
| Megalamphodus rogoaguae Pearson, 1924 | Hyphessobrycon megalopterus | 38376 |
| Odontostilbe roloffi Géry, 1972 | Odontostilbe roloffi | 37055 |
| Roeboides romeroi Fowler, 1941 | Roeboides dayi | 34412 |
| Hyphessobrycon rosaceus Durbin, 1909 | Hyphessobrycon rosaceus | 38376 |
| Joinvillea rosae Steindachner, 1908 | Deuterodon rosae | 598 |
| Megalamphodus roseus Géry, 1960 | Hyphessobrycon roseus | 12965 |
| Astyanax ruberrimus Eigenmann, 1913 | Astyanax ruberrimus | 38376 |
| Moenkhausia rubra Pastana & Dagosta, 2014 | Moenkhausia rubra | 96859 |
| Roeboides rubrivertex Cope, 1872 | Roeboides myersii | 36811 |
| Tetragonopterus rubropictus Berg, 1901 | Bryconamericus rubropictus | 38376 |
| Aphyocharax rubropinnis Pappenheim, 1922 | Aphyocharax anisitsi | 38382 |
| Hyphessobrycon rubrostigma Hoedeman, 1956 | Hyphessobrycon erythrostigma | 38376 |
| Hemigrammus rubrostriatus Zarske, 2015 | Hemigrammus rubrostriatus | 101436 |
| Creagrutus runa Vari & Harold, 2001 | Creagrutus runa | 35140 |
| Astyanax rupestris Zanata, Burger & Camelier, 2018 | Astyanax rupestris | 129195 |
| Astyanax rupununi Fowler, 1914 | Astyanax rupununi | 55833 |
| Astyanax rupununi (non Fowler, 1914) | Astyanax bimaculatus | 55833 |
| Charax rupununi Eigenmann, 1912 | Charax rupununi | 36811 |
| Hyphessobrycon rutiliflavidus Carvalho, Langeani, Miyazawa & Troy, 2008 | Hyphessobrycon rutiliflavidus | 74929 |
| Tetragonopterus rutilus (non Jenyns, 1842) | Astyanax henseli | 56653 |
| Tetragonopterus rutilus Jenyns, 1842 | Psalidodon rutilus | 3157 |
| Tetragonopterus rutilus jequitinhonhae Steindachner, 1877 | Psalidodon jequitinhonhae | 126164 |
| Astyanax rutilus nicaraguensis Eigenmann & Ogle, 1907 | Astyanax nicaraguensis | 38376 |
| Parastremma sadina Eigenmann, 1912 | Parastremma sadina | 38501 |
| Astyanax saguazu Casciotta, Almirón & Azpelicueta, 2003 | Andromakhe saguazu | 52391 |
| Hyphessobrycon saizi Géry, 1964 | Hyphessobrycon saizi | 38376 |
| Astyanax saltor Travassos, 1960 | Astyanax saltor | 38376 |
| Roeboides salvadoris Hildebrand, 1925 | Roeboides bouchellei | 34412 |
| Astyanax salvatoris Valdez-Moreno, Lozano-Vilano & Schmitter-Soto, 2017 | Astyanax salvatoris | 118583 |
| Tetragonopterus sanctaefilomenae Steindachner, 1907 | Moenkhausia sanctaefilomenae | 26282 |
| Thayeria sanctaemariae Ladiges, 1951 | Thayeria obliqua | 27116 |
| Anacyrtus sanguineus Cope, 1872 | Charax tectifer | 36811 |
| Hemibrycon sanjuanensis Román-Valencia, Ruiz-C., Taphorn & García-Alzate, 2014 | Hemibrycon sanjuanensis | 98056 |
| Hemigrammus santae Eigenmann, 1907 | Hyphessobrycon santae | 598 |
| Hemibrycon santamartae Román-Valencia, Ruiz-C., García-Alzate & Taphorn, 2010 | Hemibrycon santamartae | 83686 |
| Charax sardina Fowler, 1913 | Acestrocephalus sardina | 36811 |
| Hyphessobrycon savagei Bussing, 1967 | Hyphessobrycon savagei | 598 |
| Knodus savannensis Géry, 1961 | Knodus savannensis | 598 |
| Tetragonopterus sawa Castelnau, 1855 | Tetragonopterus argenteus | 124043 |
| Creagrutus saxatilis Vari & Harold, 2001 | Creagrutus saxatilis | 35140 |
| Probolodus sazimai Santos & Castro, 2014 | Deuterodon sazimai | 96884 |
| Roeboides sazimai Lucena, 2007 | Roeboides sazimai | 75795 |
| Tetragonopterus scabripinnis Jenyns, 1842 | Astyanax scabripinnis | 38376 |
| Astyanax scabripinnis intermedius Eigenmann, 1908 | Deuterodon intermedius | 38376 |
| Astyanax scabripinnis paranae Eigenmann, 1914 | Psalidodon paranae | 38376 |
| Hyphessobrycon schauenseei Fowler, 1926 | Hyphessobrycon schauenseei | 38376 |
| Oligosarcus schindleri Menezes & Géry, 1983 | Oligosarcus schindleri | 27925 |
| Tetragonopterus schmardae Steindachner, 1882 | Hemigrammus schmardae | 38376 |
| Hyphessobrycon scholzei Ahl, 1937 | Hyphessobrycon scholzei | 38376 |
| Astyanax schubarti Britski, 1964 | Psalidodon schubarti | 38376 |
| Moenkhausia schultzi Fernández-Yépez, 1950 | Moenkhausia schultzi | 85074 |
| Astyanax scintillans Myers, 1928 | Astyanax scintillans | 28768 |
| Tetragonopterus scleroparius Regan, 1908 | Bryconamericus scleroparius | 598 |
| Astyanax scologaster Weitzman & Vari, 1986 | Jupiaba scologaster | 27970 |
| Bryconamericus scopiferus Eigenmann, 1913 | Bryconamericus emperador | 38376 |
| Bryconamericus scopiferus guaytarae Eigenmann & Henn, 1914 | Bryconamericus guaytarae | 38376 |
| Hyphessobrycon scutulatus Lucena, 2003 | Hyphessobrycon scutulatus | 54770 |
| Nematopoma searlesii Gill, 1858 | Corynopoma riisei | 33021 |
| Hyphessobrycon sebastiani García-Alzate, Román-Valencia & Taphorn, 2010 | Hyphessobrycon sebastiani | 83523 |
| Creagrutus seductus Vari & Harold, 2001 | Creagrutus seductus | 35140 |
| Hyphessobrycon sergipanus Bragança, Ottoni & Rangel-Pereira, 2016 | Hyphessobrycon itaparicensis | 118985 |
| Hyphessobrycon serpae Durbin, 1908 | Hyphessobrycon eques | 38376 |
| Astyanax serratus Garavello & Sampaio, 2010 | Astyanax serratus | 85756 |
| Moenkhausia shideleri Eigenmann, 1909 | Moenkhausia shideleri | 38376 |
| Knodus shinahota Ferreira & Carvajal, 2007 | Knodus shinahota | 75798 |
| Astyanax siapae Garutti, 2003 | Astyanax siapae | 55833 |
| Hemibrycon sierraensis García-Alzate, Román-Valencia & Taphorn, 2015 | Hemibrycon sierraensis | 118119 |
| Tetragonopterus signatus Burmeister, 1861 | Tetragonopterus signatus | 87119 |
| Hemigrammus silimoni Britski & Lima, 2008 | Hemigrammus silimoni | 78749 |
| Hyphessobrycon simulans Géry, 1963 | Paracheirodon simulans | 26282 |
| Phenacogaster simulata Lucena & Malabarba, 2010 | Phenacogaster simulata | 123477 |
| Pseudopristella simulata Géry, 1960 | Hyphessobrycon simulatus | 12965 |
| Astyanax simulatus Eigenmann, 1924 | Moenkhausia simulata | 38376 |
| Creagrutus simus Meek & Hildebrand, 1913 | Creagrutus affinis | 28667 |
| Tetragonopterus simus Boulenger, 1898 | Bryconamericus simus | 26282 |
| Astyanax sincora Burger, Carvalho & Zanata, 2019 | Astyanax sincora | 120347 |
| Bryconamericus singularis Román-Valencia, Taphorn & Ruiz-C., 2008 | Bryconamericus singularis | 77139 |
| Deuterodon singularis Lucena & Lucena, 1992 | Deuterodon singularis | 27925 |
| Gephyrocharax sinuensis Dahl, 1964 | Gephyrocharax sinuensis | 38587 |
| Hemigrammus skolioplatus Bertaco & Carvalho, 2005 | Hemigrammus skolioplatus | 57598 |
| Bryconamericus smithi Fowler, 1913 | Knodus smithi | 38376 |
| Gymnocorymbus socolofi Géry, 1964 | Gymnocorymbus bondi | 101636 |
| Hyphessobrycon socolofi Weitzman, 1977 | Hyphessobrycon socolofi | 38376 |
| Oligosarcus solitarius Menezes, 1987 | Oligosarcus solitarius | 27925 |
| Hyphessobrycon sovichthys Schultz, 1944 | Hyphessobrycon sovichthys | 38376 |
| Diapoma speculiferum Cope, 1894 | Diapoma speculiferum | 1830 |
| Tetragonopterus spilurus Valenciennes, 1850 | Ctenobrycon spilurus | 38376 |
| Tyttobrycon spinosus Géry, 1973 | Tyttobrycon spinosus | 598 |
| Odontostilbe splendida Bührnheim & Malabarba, 2007 | Odontostilbe splendida | 75063 |
| Characinus squamosus Eigenmann & Kennedy, 1903 | Cynopotamus argenteus | 36811 |
| Pseudocorynopoma stanleyi Malabarba, Chuctaya, Hirschmann, Oliveira & Thomaz, 2020 | Pseudocorynopoma stanleyi | 123882 |
| Acrobrycon starnesi Arcila, Vari & Menezes, 2014 | Acrobrycon starnesi | 94771 |
| Hyphessobrycon stegemanni Géry, 1961 | Hyphessobrycon stegemanni | 598 |
| Cheirodon steindachneri Eigenmann & Eigenmann, 1891 | Aphyocharax nattereri | 38382 |
| Leptagoniates steindachneri Boulenger, 1887 | Leptagoniates steindachneri | 6329 |
| Tetragonopterus steindachneri Eigenmann, 1893 | Bario steindachneri | 38376 |
| Cheirodon stenodon Eigenmann, 1915 | Odontostilbe stenodon | 46206 |
| Astyanax stenohalinus Messner, 1962 | Andromakhe stenohalina | 54760 |
| Asiphonichthys stenopterus Cope, 1894 | Charax stenopterus | 36811 |
| Serrapinnus sterbai Zarske, 2012 | Serrapinnus sterbai | 89887 |
| Hyphessobrycon stictus Durbin, 1909 | Hemigrammus stictus | 38376 |
| Hyphessobrycon stigmatias Fowler, 1913 | Axelrodia stigmatias | 38376 |
| Distoechus stigmaturus Gomes, 1947 | Deuterodon stigmaturus | 38376 |
| Acestrocephalus stigmatus Menezes, 2006 | Acestrocephalus stigmatus | 75890 |
| Tetragonopterus stilbe Cope, 1870 | Astyanax stilbe | 38376 |
| Aphyocharax stramineus Eigenmann, 1907 | Aphyocharax rathbuni | 38382 |
| Bryconamericus stramineus Eigenmann, 1908 | Bryconamericus stramineus | 598 |
| Hyphessobrycon stramineus Durbin, 1918 | Hyphessobrycon stramineus | 598 |
| Tetragonopterus streetsii Cope, 1872 | Astyanax mexicanus | 38376 |
| Phenacogaster suborbitalis Ahl, 1936 | Phenacogaster suborbitalis | 36811 |
| Bryconamericus subtilisform Román-Valencia, 2003 | Bryconamericus subtilisform | 50838 |
| Astyanax superbus Myers, 1942 | Astyanax superbus | 28768 |
| Deuterodon supparis Lucena & Lucena, 1992 | Deuterodon supparis | 27925 |
| Hemibrycon surinamensis Géry, 1962 | Hemibrycon surinamensis | 38376 |
| Moenkhausia surinamensis Géry, 1965 | Moenkhausia surinamensis | 38376 |
| Megalamphodus sweglesi Géry, 1961 | Hyphessobrycon sweglesi | 13676 |
| Bryconamericus sylvicola Braga, 1998 | Bryconamericus sylvicola | 38376 |
| Mimagoniates sylvicola Menezes & Weitzman, 1990 | Mimagoniates sylvicola | 27925 |
| Astyanax symmetricus Eigenmann, 1908 | Astyanax symmetricus | 38376 |
| Tetragonopterus tabatingae Steindachner, 1876 | Phenacogaster pectinata | 36811 |
| Tetragonopterus taeniatus Jenyns, 1842 | Deuterodon taeniatus | 38376 |
| Poecilurichthys taeniurus Gill, 1858 | Hemibrycon taeniurus | 38376 |
| Hyphessobrycon taguae García-Alzate, Román-Valencia & Taphorn, 2010 | Hyphessobrycon taguae | 84248 |
| Hyphessobrycon takasei Géry, 1964 | Hyphessobrycon takasei | 38376 |
| Moenkhausia takasei Géry, 1964 | Moenkhausia takasei | 38376 |
| Tyttocharax tambopatensis Weitzman & Ortega, 1995 | Tyttocharax tambopatensis | 26646 |
| Astyanax tamiahua Schmitter-Soto, 2017 | Astyanax tamiahua | 118583 |
| Bryconadenos tanaothoros Weitzman, Menezes, Evers & Burns, 2005 | Bryconadenos tanaothoros | 56937 |
| Creagrutus taphorni Vari & Harold, 2001 | Creagrutus taphorni | 35140 |
| Hemigrammus taphorni Benine & Lopes, 2007 | Hemigrammus taphorni | 72397 |
| Hyphessobrycon taphorni García-Alzate, Román-Valencia & Ortega, 2013 | Hyphessobrycon taphorni | 93393 |
| Hollandichthys taramandahy Bertaco & Malabarba, 2013 | Hollandichthys taramandahy | 94715 |
| Acrobrycon tarijae Fowler, 1940 | Acrobrycon ipanquianus | 94771 |
| Genycharax tarpon Eigenmann, 1912 | Genycharax tarpon | 598 |
| Hyphessobrycon taurocephalus Ellis, 1911 | Hyphessobrycon taurocephalus | 38376 |
| Anacyrtus tectifer Cope, 1870 | Charax tectifer | 36811 |
| Vesicatrus tegatus Eigenmann, 1911 | Phenacogaster tegatus | 26633 |
| Astyanax tehuacanensis Schmitter-Soto, 2017 | Astyanax tehuacanensis | 118583 |
| Bryconamericus tenuis Bizerril & Auraujo, 1992 | Bryconamericus tenuis | 38376 |
| Coelurichthys tenuis Nichols, 1913 | Mimagoniates lateralis | 34092 |
| Hyphessobrycon tenuis Géry, 1964 | Hyphessobrycon tenuis | 598 |
| Moenkhausia tergimacula Lucena & Lucena, 1999 | Moenkhausia tergimacula | 38376 |
| Bryconamericus ternetzi Myers, 1928 | Bryconamericus ternetzi | 75965 |
| Tetragonopterus ternetzi Boulenger, 1895 | Gymnocorymbus ternetzi | 26282 |
| Glandulocauda terofali Géry, 1964 | Diapoma terofali | 33021 |
| Pseudocheirodon terrabae Bussing, 1967 | Pseudocheirodon terrabae | 34064 |
| Bryconamericus terrabensis Meek, 1914 | Bryconamericus terrabensis | 598 |
| Diapoma thauma Menezes & Weitzman, 2011 | Diapoma thauma | 86734 |
| Gymnocorymbus thayeri Eigenmann, 1908 | Gymnocorymbus thayeri | 101636 |
| Kolpotocheirodon theloura Malabarba & Weitzman, 2000 | Kolpotocheirodon theloura | 37055 |
| Bryconamericus thomasi Fowler, 1940 | Bryconamericus thomasi | 6329 |
| Hyphessobrycon thompsoni Fowler, 1949 | Bryconella pallidifrons | 598 |
| Roeboides thurni Eigenmann, 1912 | Roeboides affinis | 75795 |
| Cyanocharax tipiaia Malabarba & Weitzman, 2003 | Diapoma tipiaia | 55830 |
| Knodus tiquiensis Ferreira & Lima, 2006 | Knodus tiquiensis | 75965 |
| Cynopotamus tocantinensis Menezes, 1987 | Cynopotamus tocantinensis | 27925 |
| Serrapinnus tocantinensis Malabarba & Jerep, 2014 | Serrapinnus tocantinensis | 96959 |
| Hemigrammus tocantinsi Carvalho, Bertaco & Jerep, 2010 | Hemigrammus tocantinsi | 84464 |
| Hyphessobrycon togoi Miquelarena & López, 2006 | Hyphessobrycon togoi | 57841 |
| Priocharax toledopizae Mattox, Britz, Souza, Casas, Lima & Oliveira, 2023 | Priocharax toledopizae | 128833 |
| Bryconamericus tolimae Eigenmann, 1913 | Bryconamericus tolimae | 83586 |
| Piabarchus torrenticola Mahnert & Géry, 1988 | Piabarchus torrenticola | 27925 |
| Gephyrocharax torresi Vanegas-Ríos, Azpelicueta. Mirande & García Gonzales, 2013 | Gephyrocharax torresi | 93810 |
| Hyphessobrycon tortuguerae Böhlke, 1958 | Hyphessobrycon tortuguerae | 598 |
| Astyanax totae Ferreira Haluch & Abilhoa, 2005 | Astyanax totae | 56783 |
| Odontostilbe trementinae Eigenmann & Kennedy, 1903 | Odontostilbe pequira | 37055 |
| Hemibrycon tridens Eigenmann, 1922 | Hemibrycon tridens | 38376 |
| Hemigrammus tridens Eigenmann, 1907 | Hemigrammus tridens | 38376 |
| Moenkhausia tridentata Holly, 1929 | Moenkhausia tridentata | 38376 |
| Astyanax trierythropterus Godoy, 1970 | Astyanax trierythropterus | 38376 |
| Tetragonopterus trinitatis Lütken, 1875 | Hemibrycon taeniurus | 85819 |
| Cheirodon troemneri Fowler, 1942 | Hyphessobrycon rosaceus | 38376 |
| Bryconexodon trombetasi Jégu, Santos & Ferreira, 1991 | Bryconexodon trombetasi | 38376 |
| Hyphessobrycon tropis Géry, 1963 | Hyphessobrycon tropis | 598 |
| Astyanax troya Azpelicueta, Casciotta & Almirón, 2002 | Psalidodon troya | 46822 |
| Tucanoichthys tucano Géry & Römer, 1997 | Tucanoichthys tucano | 38376 |
| Caiapobrycon tucurui Malabarba & Vari, 2000 | Caiapobrycon tucurui | 45127 |
| Hyphessobrycon tukunai Géry, 1965 | Hyphessobrycon tukunai | 598 |
| Astyanax tumbayaensis Miquelarena & Menni, 2005 | Psalidodon tumbayaensis | 57155 |
| Aphyodite tupebas Esguícero & Castro, 2017 | Aphyodite tupebas | 116757 |
| Astyanax tupi Azpelicueta, Mirande, Almirón & Casciotta, 2003 | Andromakhe tupi | 55798 |
| Bryconamericus turiuba Langeani, Lucena, Pedrini & Tarelho-Pereira, 2005 | Bryconamericus turiuba | 54761 |
| Astyanax turmalinensis Triques, Vono & Caiafa, 2003 | Astyanax turmalinensis | 52302 |
| Hyphessobrycon tuyensis García-Alzate, Román-Valencia & Taphorn, 2008 | Hyphessobrycon tuyensis | 79635 |
| Creagrutus tuyuka Vari & Lima, 2003 | Creagrutus tuyuka | 52414 |
| Stygichthys typhlops Brittan & Böhlke, 1965 | Stygichthys typhlops | 27297 |
| Phoxinopsis typicus Regan, 1907 | Aphyocharax anisitsi | 38382 |
| Hyphessobrycon uaiso Carvalho & Langeani, 2013 | Hyphessobrycon uaiso | 94154 |
| Hasemania uberaba Serra & Langeani, 2015 | Hasemania uberaba | 104709 |
| Moenkhausia uirapuru Ohara & Lima, 2015 | Moenkhausia uirapuru | 119236 |
| Tetragonopterus ulreyi Boulenger, 1895 | Hemigrammus ulreyi | 38376 |
| Creagrutus ungulus Vari & Harold, 2001 | Creagrutus ungulus | 35140 |
| Poecilurichthys unilineatus Gill, 1858 | Hemigrammus unilineatus | 13676 |
| Hemigrammus unilineatus cayennensis Géry, 1959 | Hemigrammus unilineatus | 13676 |
| Charax unimaculatus Lucena, 1989 | Charax unimaculatus | 27925 |
| Astyanax unitaeniatus Garutti, 1998 | Astyanax unitaeniatus | 38376 |
| Bryconamericus uporas Casciotta, Azpelicueta & Almirón, 2002 | Bryconamericus uporas | 38376 |
| Macropsobrycon uruguayanae Eigenmann, 1915 | Macropsobrycon uruguayanae | 598 |
| Megalamphodus uruguayensis Fowler, 1943 | Ectrepopterus uruguayensis | 89798 |
| Astyanax utiariti Bertaco & Garutti, 2007 | Astyanax utiariti | 75035 |
| Gephyrocharax valencia Eigenmann, 1920 | Gephyrocharax valencia | 28768 |
| Astyanax validus Géry, Planquette & Le Bail, 1991 | Astyanax validus | 12225 |
| Astyanax varii Zanata, Burger, Vita & Camelier, 2019 | Astyanax varii | 129191 |
| Creagrutus varii Ribeiro, Benine & Figueiredo, 2004 | Creagrutus varii | 52412 |
| Oligosarcus varii Menezes & Ribeiro, 2015 | Oligosarcus varii | 104692 |
| Priocharax varii Mattox, Souza, Toledo-Piza, Britz & Oliveira, 2020 | Priocharax varii | 128819 |
| Xenurobrycon varii Mendonça, Peixoto, Dutra & Netto-Ferreira, 2016 | Xenurobrycon varii | 109914 |
| Astyanax varzeae Abilhoa & Duboc, 2007 | Astyanax varzeae | 72395 |
| Corynopoma veedonii Gill, 1858 | Corynopoma riisei | 33021 |
| Hemibrycon velox Dahl, 1964 | Hemibrycon velox | 38376 |
| Moenkhausia venerei Petrolli, Azevedo-Santos & Benine, 2016 | Moenkhausia venerei | 107661 |
| Astyanax venezuelae Schultz, 1944 | Astyanax venezuelae | 38376 |
| Gephyrocharax venezuelae Schultz, 1944 | Gephyrocharax venezuelae | 12468 |
| Nematocharax venustus Weitzman, Menezes & Britski, 1986 | Nematocharax venustus | 27925 |
| Astyanax vermilion Zanata & Camelier, 2009 | Astyanax vermilion | 81202 |
| Creagrutus veruina Vari & Harold, 2001 | Creagrutus veruina | 35140 |
| Creagrutus vexillapinnus Vari & Harold, 2001 | Creagrutus vexillapinnus | 35140 |
| Tetragonopterus victoriae Steindachner, 1907 | Knodus victoriae | 598 |
| Knodus victoriae septentrionalis Géry, 1972 | Knodus septentrionalis | 46206 |
| Tetragonopterus viejita Valenciennes, 1850 | Psalidodon fasciatus | 38376 |
| Astyanax villwocki Zarske & Géry, 1999 | Astyanax villwocki | 34074 |
| Hyphessobrycon vilmae Géry, 1966 | Hyphessobrycon vilmae | 598 |
| Hyphessobrycon vinaceus Bertaco, Malabarba & Dergam, 2007 | Hyphessobrycon vinaceus | 75059 |
| Hemibrycon virolinica Román-Valencia & Arcila-Mesa, 2010 | Hemibrycon virolinica | 83529 |
| Tetragonopterus vittatus Castelnau, 1855 | Astyanax bimaculatus | 38376 |
| Hemigrammus vorderwinkleri Géry, 1963 | Hemigrammus vorderwinkleri | 38376 |
| Hyphessobrycon wadai Marinho, Dagosta, Camelier & Oyakawa, 2016 | Hyphessobrycon wadai | 109743 |
| Hyphessobrycon wajat Almirón & Casciotta, 1999 | Hyphessobrycon wajat | 38376 |
| Tetragonopterus wappi Valenciennes, 1850 | Astyanax bimaculatus | 38376 |
| Phenacogaster wayampi Le Bail & Lucena, 2010 | Phenacogaster wayampi | 84092 |
| Phenacogaster wayana Le Bail & Lucena, 2010 | Phenacogaster wayana | 84092 |
| Boehlkea weitzmani Soares, Bertaco, Ito & Zuanon, 2017 | Boehlkea weitzmani | 118101 |
| Bryconadenos weitzmani Menezes, Netto-Ferreira & Ferreira, 2009 | Bryconadenos weitzmani | 81197 |
| Lophiobrycon weitzmani Castro, Ribeiro, Benine & Melo, 2003 | Lophiobrycon weitzmani | 52251 |
| Odontostilbe weitzmani Chuctaya, Bührnheim & Malabarba, 2018 | Odontostilbe weitzmani | 128907 |
| Hyphessobrycon weitzmanorum Lima & Moreira, 2003 | Hyphessobrycon weitzmanorum | 52338 |
| Hyphessobrycon werneri Géry & Uj, 1987 | Hyphessobrycon werneri | 13676 |
| Microgenys weyrauchi Fowler, 1945 | Microgenys weyrauchi | 38376 |
| Gephyrocharax whaleri Hildebrand, 1938 | Gephyrocharax whaleri | 27116 |
| Phenagoniates wilsoni Eigenmann, 1914 | Phenagoniates macrolepis | 38376 |
| Hyphessobrycon wosiackii Moreira & Lima, 2017 | Hyphessobrycon wosiackii | 116179 |
| Astyanax xavante Garutti & Venere, 2009 | Psalidodon xavante | 82392 |
| Epicyrtus xenodon Reinhardt, 1851 | Roeboides xenodon | 36811 |
| Tyttobrycon xeruini Géry, 1973 | Tyttobrycon xeruini | 598 |
| Cynopotamus xinguano Menezes, 2007 | Cynopotamus xinguano | 72392 |
| Macropsobrycon xinguensis Géry, 1973 | Macropsobrycon xinguensis | 48602 |
| Tetragonopterus xinguensis Steindachner, 1882 | Moenkhausia xinguensis | 38376 |
| Creagrutus xiphos Vari & Harold, 2001 | Creagrutus xiphos | 35140 |
| Astyanax xiru Lucena, Castro & Bertaco, 2013 | Psalidodon xiru | 94153 |
| Hemibrycon yacopiae Román-Valencia & Arcila-Mesa, 2010 | Hemibrycon yacopiae | 83529 |
| Creagrutus yanatili Harold & Salcedo, 2010 | Creagrutus yanatili | 83426 |
| Astyanacinus yariguies Torres-Mejia, Hernández & Senechal, 2012 | Astyanax yariguies | 91755 |
| Jupiaba yarina Zanata, 1997 | Jupiaba yarina | 38376 |
| Odontostilbe yatai Casciotta, Miquelarena & Protogino, 1992 | Heterocheirodon yatai | 34064 |
| Aphyocharax yekwanae Willink, Chernoff & Machado-Allison, 2003 | Aphyocharax yekwanae | 49521 |
| Hemigrammus yinyang Lima & Sousa, 2009 | Hemigrammus yinyang | 82434 |
| Bryconamericus yokiae Román-Valencia, 2003 | Bryconamericus yokiae | 49957 |
| Chrysobrycon yoliae Vanegas-Ríos, Azpelicueta & Ortega, 2014 | Chrysobrycon yoliae | 96866 |
| Bryconamericus ytu Almirón, Azpelicueta & Casciotta, 2004 | Bryconamericus ytu | 55781 |
| Creagrutus yudja Netto-Ferreira & Moreira, 2018 | Creagrutus yudja | 122128 |
| Bryconamericus zamorensis Román-Valencia, Ruiz-C., Taphorn B. & García-A., 2013 | Bryconamericus zamorensis | 93958 |
| Serrapinnus zanatae Jerep, Camelier & Malabarba, 2016 | Serrapinnus zanatae | 119705 |
| Creagrutus zephyrus Vari & Harold, 2001 | Creagrutus zephyrus | 35140 |
| Bryconamericus zeteki Hildebrand, 1938 | Bryconamericus zeteki | 598 |
| Hyphessobrycon zoe Faria, Lima & Wosiacki, 2020 | Hyphessobrycon zoe | 125533 |
| Astyanax zonatus Eigenmann, 1908 | Jupiaba zonata | 27970 |