FB-63770 http://www.fishbase.org/summary/SpeciesSummary.php?id=63770 Animalia Chordata Teleostei Pleuronectiformes Bothidae Engyprosopon Engyprosopon kushimotoense Amaoka, Kaga & Misaki, 2008 Rivulus planaltinus Costa & Brasil, 2008 2008-04-23 2008-05-08 Costa, W.J.E.M. and G.C. Brasil0 A new pelvicless killifish species of the genus Rivulus, subgenus Melanorivulus (Cyprinodontiformes: Rivulidae), from the upper Tocantins River Basin, Central Brazil. Copeia 2008(1):82-85. (Ref. 75171) Costa, W.J.E.M.0 Phylogenetic position and taxonomic status of Anablepsoides, Atlantirivulus, Cynodonichthys, Laimosemion and Melanorivulus (Cyprinodontiformes: Rivulidae). Ichthyol. Explor. Freshwat. 22(3):233-249. (Ref. 89845) FB-DiagnosticDescr-63778 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2008-04-25 00:00:00 2008-04-25 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=63778 Belongs to the subgenus Melanorivulus by having all the subgeneric synapomorphic characters: short and pointed dorsal portion of preopercle; melanophores concentrated on opercular region to form oblique stripes; melanophores concentrated on margins of unpaired fins in females; black spot on upper portion of caudal-fin base not close to fin margin in females. Differs from all other species of Melanorivulus by the following characters: lack or extreme reduction of pelvic fins and pelvic girdle; vomerine teeth 5-7; and basihyal width about 70% basihyal length (Ref. 75171). Costa, W.J.E.M. and G.C. Brasil 2008 A new pelvicless killifish species of the genus Rivulus, subgenus Melanorivulus (Cyprinodontiformes: Rivulidae), from the upper Tocantins River Basin, Central Brazil. Copeia 2008(1):82-85. (Ref. 75171) FB-Morphology-63778 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2008-04-25 00:00:00 2008-04-25 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=63778 Dorsal soft rays (total): 8 - 10; Analsoft rays: 12 - 14 Costa, W.J.E.M. and G.C. Brasil 2008 A new pelvicless killifish species of the genus Rivulus, subgenus Melanorivulus (Cyprinodontiformes: Rivulidae), from the upper Tocantins River Basin, Central Brazil. Copeia 2008(1):82-85. (Ref. 75171) FB-Distribution-63778 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2008-04-25 00:00:00 2025-11-05 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=63778 South America: known only from the type locality in the Cocal River floodplains, Maranhão River drainage, upper Tocantins River basin in Brazil. Costa, W.J.E.M. and G.C. Brasil 2008 A new pelvicless killifish species of the genus Rivulus, subgenus Melanorivulus (Cyprinodontiformes: Rivulidae), from the upper Tocantins River Basin, Central Brazil. Copeia 2008(1):82-85. (Ref. 75171) FB-Size-63778 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2008-04-25 00:00:00 2012-10-23 00:00:00 Max. size http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=63778 3.1 cm SL (male/unsexed; (Ref. 75171)); 2.76 cm SL (female) Costa, W.J.E.M. and G.C. Brasil 2008 A new pelvicless killifish species of the genus Rivulus, subgenus Melanorivulus (Cyprinodontiformes: Rivulidae), from the upper Tocantins River Basin, Central Brazil. Copeia 2008(1):82-85. (Ref. 75171) FB-Threats-2 http://purl.org/dc/dcmitype/Text text/html Belen Acosta 1990-10-18 00:00:00 2024-03-07 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=2 Least Concern (LC) , IUCN Grouper and Wrasse Specialist Group IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006. FB-Habitat-63778 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2008-04-25 00:00:00 2012-10-23 00:00:00 Environment http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=63778 benthopelagic; freshwater