FB-68742 http://www.fishbase.org/summary/SpeciesSummary.php?id=68742 Animalia Chordata Teleostei Callionymiformes Callionymidae Callionymus Callionymus petersi Fricke, 2016 2018-08-15 2024-08-16 Costa, W.J.E.M.0 Three new species of the killifish genus <i>Melanorivulus</i> from the Rio Paraná, central Brazilian Cerrado (Cyprinodontiformes: Aplocheilidae). Zoosyst. Evol. 94(1):17-27. (Ref. 116860) FB-DiagnosticDescr-68751 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2019-01-07 00:00:00 2019-01-07 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68751 Melanorivulus nigromarginatus is similar to M. egens and M. linearis, and differs from all other members of the M. pictus group by having a black distal marginal stripe on the anal fin in males (vs. absence). It can be diagnosed from M. egens and M. linearis by having the following characters: melanophores strongly concentrated on the post-orbital and humeral regions, forming a stripe (vs. weakly concentrated, not forming distinct marks); red dots on the anteroventral portion of flank present (vs. absent); red bars on most portion of caudal fin present in males (vs. bars absent in M. egens and bars restricted to the dorsal portion of the caudal fin in M. linearis); and red chevron-shaped marks irregularly distributed on the flank (vs. regularly). In addition, but not diagnostic to differentiate all speci¬mens, M. nigromarginatus usually possesses 31-33 scales in the longitudinal series (vs. 29-31 in M. egens and M. linearis) (Ref. 116860). Costa, W.J.E.M. 2018 Three new species of the killifish genus <i>Melanorivulus</i> from the Rio Paraná, central Brazilian Cerrado (Cyprinodontiformes: Aplocheilidae). Zoosyst. Evol. 94(1):17-27. (Ref. 116860) FB-Morphology-68751 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2019-01-07 00:00:00 2019-01-07 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68751 Dorsal soft rays (total): 10 - 11; Analsoft rays: 13 - 15; Vertebrae: 30 - 32 Costa, W.J.E.M. 2018 Three new species of the killifish genus <i>Melanorivulus</i> from the Rio Paraná, central Brazilian Cerrado (Cyprinodontiformes: Aplocheilidae). Zoosyst. Evol. 94(1):17-27. (Ref. 116860) FB-Distribution-68751 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2018-08-15 00:00:00 2019-01-07 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68751 South America: CorrenteRiver drainage, upper Paraná River Basin in Brazil. Costa, W.J.E.M. 2018 Three new species of the killifish genus <i>Melanorivulus</i> from the Rio Paraná, central Brazilian Cerrado (Cyprinodontiformes: Aplocheilidae). Zoosyst. Evol. 94(1):17-27. (Ref. 116860) FB-Size-68751 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2018-08-15 00:00:00 2019-01-07 00:00:00 Max. size http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68751 3.6 cm SL (male/unsexed; (Ref. 116860)); 3.08 cm SL (female) Costa, W.J.E.M. 2018 Three new species of the killifish genus <i>Melanorivulus</i> from the Rio Paraná, central Brazilian Cerrado (Cyprinodontiformes: Aplocheilidae). Zoosyst. Evol. 94(1):17-27. (Ref. 116860) 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-68751 http://purl.org/dc/dcmitype/Text text/html Armi G. Torres 2018-08-15 00:00:00 2019-01-07 00:00:00 Environment http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=68751 benthopelagic; freshwater