FB-70209 http://www.fishbase.org/summary/SpeciesSummary.php?id=70209 Animalia Chordata Teleostei Anguilliformes Muraenidae Gymnothorax Gymnothorax ryukyuensis Hatooka, 2003 2023-07-11 2023-07-11 de Santana, C.D. and R.P. Vari0 Brown ghost electric fishes of the <i>Apteronotus leptorhynchus</i> species-group (Ostariophysi, Grymnotiformes); monophyly, major clades, and revision. Zool. J. Lin. Soc. 168(3):564-596. (Ref. 93867) Beolens, B., M. Grayson and M. Watkins0 Eponym dictionary of Fishes. Dunbeath, Caithness (Scotland, UK): Whittles Publishing Limited, 1300 p. (Ref. 128868) FB-GeneralDescr-70218 http://purl.org/dc/dcmitype/Text text/html Luisa Abucay 2023-07-12 00:00:00 2023-07-12 00:00:00 Biology http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=70218 Inhabits swift current habitats over substrates of rounded stones. It was observed that this species is a voracious nocturnal predator (Ref. 93867). de Santana, C.D. and R.P. Vari 2013 Brown ghost electric fishes of the <i>Apteronotus leptorhynchus</i> species-group (Ostariophysi, Grymnotiformes); monophyly, major clades, and revision. Zool. J. Lin. Soc. 168(3):564-596. (Ref. 93867) FB-DiagnosticDescr-70218 http://purl.org/dc/dcmitype/Text text/html Luisa Abucay 2023-07-12 00:00:00 2023-07-12 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=70218 This species can be distinguished from its congeners by the following set of characters: A 159-176; P 14-16; C 10-13; precaudal vertebrae 18-19; total vertebrae 70-83; 5th infraorbital present as a tubular laterosensory canal segment; cartilaginous lateral ethmoid; the number of scales above the lateral line at the midbody 7-9; the number of scales along the lateral line 59-63; the extent of the mid-dorsal groove (extending seven to eight scales beyond the vertical through the posterior terminus of the anal fin); tail length 17.1-37.5% of LEA; interorbital distance 14.7-36.5% of HL. Colouration: head and body dark brown from a lateral view with the fins apparently hyaline; distinct pale, broad, longitudinal band extends from chin along dorsal midline of head and body to over dorsal filament; pectoral and anal-fin rays ranging from translucent to dark brown with interradial membranes translucent; pale band encircling base of caudal fin; caudal fin pale at base, pale to black on central portion and translucent posteriorly (Ref. 93867). de Santana, C.D. and R.P. Vari 2013 Brown ghost electric fishes of the <i>Apteronotus leptorhynchus</i> species-group (Ostariophysi, Grymnotiformes); monophyly, major clades, and revision. Zool. J. Lin. Soc. 168(3):564-596. (Ref. 93867) FB-Morphology-70218 http://purl.org/dc/dcmitype/Text text/html Luisa Abucay 2023-07-12 00:00:00 2023-07-12 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=70218 Analsoft rays: 159 - 176; Vertebrae: 70 - 83 de Santana, C.D. and R.P. Vari 2013 Brown ghost electric fishes of the <i>Apteronotus leptorhynchus</i> species-group (Ostariophysi, Grymnotiformes); monophyly, major clades, and revision. Zool. J. Lin. Soc. 168(3):564-596. (Ref. 93867) FB-Distribution-70218 http://purl.org/dc/dcmitype/Text text/html Luisa Abucay 2023-07-12 00:00:00 2023-07-12 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=70218 South America: Colombia and Venezuela. de Santana, C.D. and R.P. Vari 2013 Brown ghost electric fishes of the <i>Apteronotus leptorhynchus</i> species-group (Ostariophysi, Grymnotiformes); monophyly, major clades, and revision. Zool. J. Lin. Soc. 168(3):564-596. (Ref. 93867) FB-TrophicStrategy-70218 http://purl.org/dc/dcmitype/Text text/html Luisa Abucay 2023-07-12 00:00:00 2023-07-12 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ anu Found in rivers with swift current over substrates of rounded stones. It was observed that this species is a voracious nocturnal predator (Ref. 93867). de Santana, C.D. and R.P. Vari 2013 Brown ghost electric fishes of the <i>Apteronotus leptorhynchus</i> species-group (Ostariophysi, Grymnotiformes); monophyly, major clades, and revision. Zool. J. Lin. Soc. 168(3):564-596. (Ref. 93867) FB-Size-70218 http://purl.org/dc/dcmitype/Text text/html Luisa Abucay 2023-07-12 00:00:00 2023-07-12 00:00:00 Max. size http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=70218 27.1 cm TL (male/unsexed; (Ref. 93867)) de Santana, C.D. and R.P. Vari 2013 Brown ghost electric fishes of the <i>Apteronotus leptorhynchus</i> species-group (Ostariophysi, Grymnotiformes); monophyly, major clades, and revision. Zool. J. Lin. Soc. 168(3):564-596. (Ref. 93867) 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-70218 http://purl.org/dc/dcmitype/Text text/html Luisa Abucay 2023-07-12 00:00:00 2023-07-12 00:00:00 Environment http://creativecommons.org/licenses/by-nc/3.0/ http://www.fishbase.org/summary/SpeciesSummary.php?id=70218 benthopelagic; freshwater