FB-9309 http://www.fishbase.org/summary/SpeciesSummary.php?id=9309 Animalia Chordata Teleostei Siluriformes Claroteidae Chrysichthys Chrysichthys longidorsalis Risch & Thys van den Audenaerde, 1981 Chrysichthys longidorsalis longidorsalis Risch & Thys van den Audenaerde, 1981 Gephyroglanis velifer Thys van den Audenaerde, 1965 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) Hureau, J.-C.0 La base de données GICIM: Gestion informatisée des collections ichthyologiques du Muséum. p. 225-227. In Atlas Préliminaire des Poissons d'Eau Douce de France. Conseil Supérieur de la Pêche, Ministère de l'Environnement, CEMAGREF et Muséum national d'Histoire naturelle, Paris. (Ref. 4517) Anonymous0 Fish registrations within the museum database of the Vertebrate Section of the Royal Museum for Central Africa. MRAC, Tervuren, Belgium. (Ref. 12818) Vivien, J.0 Faune du Cameroun. Guide des mammifères et poissons. GICAM et Ministère de la Coopération et du Développement, Yaoundé/Paris. 271 p. (Ref. 51193) 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) FB-DiagnosticDescr-9309 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=9309 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Habitat Diagnosis: width (as percentage of length) of occipital process 75-114% (average 93%); depth (as percentage of width) of premaxillary tooth plate 19-36% (average 26%); vomerine teeth absent or exceptionally present as isolated teeth (mature males have a small vomerine tooth plate), palatine teeth absent (Ref. 81642).Description: within the subgenus Chrysobagrus, C. longidorsalis has an acute, pointed snout and a relatively small mouth with premaxillary toothband 14-20% (generally 16.6%) HL; occipital process very broad (base length 5-7.5 times in HL); in 60% of specimens examined vomerine dentition was lacking, and in remaining 40% it was represented only by a few isolated teeth; palatine dentition always lacking; species, as its name suggests, also characterized by its high dorsal fin (33-66% SL) and long caudal fin (upper lobe 30-70% SL); remarkably, C. nigrodigitatus of the same locality (middle Sanaga and Nachtigal Falls) show a similar phenotype; anal fin with 4 soft branched rays and 8-9 unbranched rays; the single ripe male examined differs little from immature males but its vomerine dentition is far more developed and is in the form of a small tooth plate (Ref. 81642).Coloration: rather uniform; in preservation head and dorsum dark brown, ventrum creamy white (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-9309 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=9309 http://rs.tdwg.org/ontology/voc/SPMInfoItems#DiagnosticDescription 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-9309 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=9309 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Morphology Africa: endemic to the Sanaga 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-9309 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=9309 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Distribution 31.2 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/ 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-9309 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=9309 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Size demersal; freshwater