| Nominal Species (n = 53) | Present allocation (n = 48) | Ref. |
|---|---|---|
| Brachyhypopomus alberti Crampton, de Santana, Waddell & Lovejoy, 2017 | Brachyhypopomus alberti | 116763 |
| Brachyhypopomus arrayae Crampton, de Santana, Waddell & Lovejoy, 2017 | Brachyhypopomus arrayae | 116763 |
| Rhamphichthys artedi Kaup, 1856 | Hypopomus artedi | 26457 |
| Brachyhypopomus batesi Crampton, de Santana, Waddell & Lovejoy, 2017 | Brachyhypopomus batesi | 116763 |
| Hypopomus beebei Schultz, 1944 | Brachyhypopomus beebei | 12225 |
| Brachyhypopomus belindae Crampton, de Santana, Waddell & Lovejoy, 2017 | Brachyhypopomus belindae | 116763 |
| Brachyhypopomus benjamini Crampton, de Santana, Waddell & Lovejoy, 2017 | Brachyhypopomus benjamini | 116763 |
| Brachyhypopomus bennetti Sullivan, Zuanon & Cox Fernandes, 2013 | Brachyhypopomus bennetti | 94132 |
| Hypopygus benoneae Peixoto, Dutra, de Santana & Wosicki, 2013 | Hypopygus benoneae | 93869 |
| Microsternarchus bilineatus Fernández-Yépez, 1968 | Microsternarchus bilineatus | 26457 |
| Brachyhypopomus bombilla Loureiro & Silva, 2006 | Brachyhypopomus bombilla | 75964 |
| Rhamphichthys brevirostris Steindachner, 1868 | Brachyhypopomus brevirostris | 12965 |
| Microsternarchus brevis Cox Fernandes, Nogueira, Williston & Alves-Gomes, 2015 | Microsternarchus brevis | 104297 |
| Brachyhypopomus bullocki Sullivan & Hopkins, 2009 | Brachyhypopomus bullocki | 81045 |
| Stegostenopos cryptogenes Triques, 1997 | Stegostenopos cryptogenes | 37053 |
| Brachyhypopomus cunia Crampton, de Santana, Waddell & Lovejoy, 2017 | Brachyhypopomus cunia | 116763 |
| Brachyhypopomus degy Dutra, Peixoto, Ochoa, Ohara, de Santana, Menezes & Datovo, 2021 | Brachyhypopomus degy | 123707 |
| Hypopomus diazae Fernández-Yépez, 1972 | Brachyhypopomus diazae | 123477 |
| Brachyhypopomus draco Giora, Malabarba & Crampton, 2008 | Brachyhypopomus draco | 76853 |
| Tateichthys duidae (non La Monte, 1929) | Hypopygus lepturus | 26457 |
| Tateichthys duidae La Monte, 1929 | Steatogenys duidae | 26457 |
| Rhamphichthys elegans Steindachner, 1880 | Steatogenys elegans | 26457 |
| Racenisia fimbriipinna Mago-Leccia, 1994 | Racenisia fimbriipinna | 26457 |
| Brachyhypopomus flavipomus Crampton, de Santana, Waddell & Lovejoy, 2017 | Brachyhypopomus flavipomus | 116763 |
| Brachyhypopomus gauderio Giora & Malabarba, 2009 | Brachyhypopomus gauderio | 80844 |
| Brachyhypopomus hamiltoni Crampton, de Santana, Waddell & Lovejoy, 2017 | Brachyhypopomus hamiltoni | 116763 |
| Brachyhypopomus hendersoni Crampton, de Santana, Waddell & Lovejoy, 2017 | Brachyhypopomus hendersoni | 116763 |
| Hypopygus hoedemani de Santana & Crampton, 2011 | Hypopygus hoedemani | 88778 |
| Hypopygus isbruckeri de Santana & Crampton, 2011 | Hypopygus isbruckeri | 88778 |
| Hypopomus janeiroensis Costa & Campos-da-Paz, 1992 | Brachyhypopomus janeiroensis | 26457 |
| Brachyhypopomus jureiae Triques & Khamis, 2003 | Brachyhypopomus jureiae | 55506 |
| Hypopygus lepturus Hoedeman, 1962 | Hypopygus lepturus | 12225 |
| Parupygus litaniensis Hoedeman, 1962 | Hypopomus artedi | 26457 |
| Brachyhypopomus menezesi Crampton, de Santana, Waddell & Lovejoy, 2017 | Brachyhypopomus menezesi | 116763 |
| Hypopygus minissimus de Santana & Crampton, 2011 | Hypopygus minissimus | 88778 |
| Rhamphichthys mirabilis Steindachner, 1880 | Steatogenys elegans | 26457 |
| Rhamphichthys mulleri Kaup, 1856 | Hypopomus artedi | 37053 |
| Hypopygus neblinae Mago-Leccia, 1994 | Hypopygus neblinae | 26457 |
| Hypopygus nijsseni de Santana & Crampton, 2011 | Hypopygus nijsseni | 88778 |
| Hypopomus occidentalis Regan, 1914 | Brachyhypopomus occidentalis | 26457 |
| Steatogenys ocellatus Crampton, Thorsen & Albert, 2004 | Steatogenys ocellatus | 51263 |
| Hypopygus ortegai de Santana & Crampton, 2011 | Hypopygus ortegai | 88778 |
| Brachyhypopomus palenque Crampton, de Santana, Waddell & Lovejoy, 2017 | Brachyhypopomus palenque | 116763 |
| Akawaio penak Maldonado-Ocampo, López-Fernández, Taphorn, Bernard, Crampton & Lovejoy, 2013 | Akawaio penak | 94087 |
| Hypopomus pinnicaudatus Hopkins, 1991 | Brachyhypopomus pinnicaudatus | 39596 |
| Procerusternarchus pixuna Cox Fernandes, Nogueira & Alves-Gomes, 2014 | Procerusternarchus pixuna | 102656 |
| Brachyhypopomus provenzanoi Crampton, de Santana, Waddell & Lovejoy, 2017 | Brachyhypopomus provenzanoi | 116763 |
| Brachyhypopomus regani Crampton, de Santana, Waddell & Lovejoy, 2017 | Brachyhypopomus regani | 116763 |
| Parupygus savannensis Hoedeman, 1962 | Hypopomus artedi | 37053 |
| Brachyhypopomus sullivani Crampton, de Santana, Waddell & Lovejoy, 2017 | Brachyhypopomus sullivani | 116763 |
| Hypopygus varii Campos-da-Paz, 2018 | Hypopygus varii | 128475 |
| Brachyhypopomus verdii Crampton, de Santana, Waddell & Lovejoy, 2017 | Brachyhypopomus verdii | 116763 |
| Brachyhypopomus walteri Sullivan, Zuanon & Cox Fernandes, 2013 | Brachyhypopomus walteri | 94132 |