FB-9310 http://www.fishbase.org/summary/SpeciesSummary.php?id=9310 Animalia Chordata Teleostei Siluriformes Claroteidae Chrysichthys Chrysichthys nyongensis Risch & Thys van den Audenaerde, 1985 Chrysichthys longidorsalis nyongensis Risch & Thys van den Audenaerde, 1985 Chrysichthys nigrodigitatus (non Lacepède, 1803) 1994-04-13 2024-04-16 Risch, L.M.0 Bagridae. p. 2-35. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 2. (Ref. 3236) Anonymous0 Fish registrations within the museum database of the Vertebrate Section of the Royal Museum for Central Africa. MRAC, Tervuren, Belgium. (Ref. 12818) Risch, L. and E.J. Vreven0 Claroteinae. p. 607-629. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) The fresh and brackish water fishes of Lower Guinea, West-Central Africa. Volume I. Collection Faune et Flore tropicales 42. Institut de Recherche pour le Développement, Paris, France, Muséum National d’Histoire Naturelle, Paris, France, and Musée Royal de l’Afrique Centrale, Tervuren, Belgium. 800 pp. (Ref. 74659) Geerinckx, T., L. Risch, E.J. Vreven, D. Adriaens and G.G. Teugels0 Claroteidae. p. 587-629. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) The fresh and brackish water fishes of Lower Guinea, West-Central Africa. Volume I. Collection Faune et Flore tropicales 42. Institut de Recherche pour le Développement, Paris, France, Muséum National d’Histoire Naturelle, Paris, France, and Musée Royal de l’Afrique Centrale, Tervuren, Belgium. 800 pp. (Ref. 81642) FAO-FIES0 Aquatic Sciences and Fisheries Information System (ASFIS) species list. Retrieved from http://www.fao.org/fishery/collection/asfis/en (accessed 08/06/2017). (Ref. 115257) FB-DiagnosticDescr-9310 http://purl.org/dc/dcmitype/Text text/html Tobias Musschoot 2017-09-11 00:00:00 2017-09-11 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=9310 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Threats Diagnosis: width (as percentage of length) of occipital process) 67-93% (average 79%); depth (as percentage of width) of premaxillary tooth plate 29-43% (average 35%); vomerine dentition generally present as isolated teeth, exceptionally forming small tooth plates, palatine teeth mostly absent, but sometimes present (in mature males)(Ref. 81642).Description: snout pointed; mouth rather small, with a premaxillary toothband width 12.5-20% (generally 16.6%) HL; occipital process broad (base length 6-8 times in HL); vomerine dentition present as small toothbands (in 47% of specimens), as a few isolated teeth (in 35% of specimens) or absent (in 18% of specimens); few individuals have 1-2 palatine teeth, but great majority lack a palatine dentition; dorsal fin of medium height (29-37% SL); anal fin with 4-5 soft unbranched rays and 7-9 branched rays; (only three) males (160-186 mm SL) with enlarged testes and a single gravid female (172 mm SL) are known; mature males do not exhibit inflated heads and widened mouths of Chrysichthys and Melanodactylus species, however their vomerine dentition is more pronounced and present as a small tooth plate, and all have teeth on palatine (Ref. 81642).Coloration: preserved specimens with head and dorsum dark brown, creamy white ventrally (Ref. 81642). Geerinckx, T., L. Risch, E.J. Vreven, D. Adriaens and G.G. Teugels 2007 Claroteidae. p. 587-629. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) The fresh and brackish water fishes of Lower Guinea, West-Central Africa. Volume I. Collection Faune et Flore tropicales 42. Institut de Recherche pour le Développement, Paris, France, Muséum National d’Histoire Naturelle, Paris, France, and Musée Royal de l’Afrique Centrale, Tervuren, Belgium. 800 pp. (Ref. 81642) FB-Morphology-9310 http://purl.org/dc/dcmitype/Text text/html Tobias Musschoot 2017-09-11 00:00:00 2017-09-11 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=9310 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Habitat Dorsal spines (total): 2; Dorsal soft rays (total): 6 Geerinckx, T., L. Risch, E.J. Vreven, D. Adriaens and G.G. Teugels 2007 Claroteidae. p. 587-629. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) The fresh and brackish water fishes of Lower Guinea, West-Central Africa. Volume I. Collection Faune et Flore tropicales 42. Institut de Recherche pour le Développement, Paris, France, Muséum National d’Histoire Naturelle, Paris, France, and Musée Royal de l’Afrique Centrale, Tervuren, Belgium. 800 pp. (Ref. 81642) FB-Distribution-9310 http://purl.org/dc/dcmitype/Text text/html Pascualita Sa-a 1994-04-13 00:00:00 2025-11-05 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=9310 http://rs.tdwg.org/ontology/voc/SPMInfoItems#DiagnosticDescription Africa: endemic to the Nyong River in Cameroon (Ref. 81642). Risch, L.M. 1986 Bagridae. p. 2-35. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 2. (Ref. 3236) FB-Size-9310 http://purl.org/dc/dcmitype/Text text/html Pascualita Sa-a 1994-04-13 00:00:00 2024-04-16 00:00:00 Max. size http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=9310 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Morphology 23.1 cm SL (male/unsexed; (Ref. 81642)) Geerinckx, T., L. Risch, E.J. Vreven, D. Adriaens and G.G. Teugels 2007 Claroteidae. p. 587-629. In M.L.J. Stiassny, G.G. Teugels and C.D. Hopkins (eds.) The fresh and brackish water fishes of Lower Guinea, West-Central Africa. Volume I. Collection Faune et Flore tropicales 42. Institut de Recherche pour le Développement, Paris, France, Muséum National d’Histoire Naturelle, Paris, France, and Musée Royal de l’Afrique Centrale, Tervuren, Belgium. 800 pp. (Ref. 81642) 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/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Distribution 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-9310 http://purl.org/dc/dcmitype/Text text/html Pascualita Sa-a 1994-04-13 00:00:00 2024-04-16 00:00:00 Environment http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=9310 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Uses demersal; freshwater