FB-2440 http://www.fishbase.org/summary/SpeciesSummary.php?id=2440 Animalia Chordata Teleostei Siluriformes Claroteidae Chrysichthys Chrysichthys nigrodigitatus (Lacepède, 1803) Kpotue Gabelschwanzwels Bagrid catfish Catfish Mudfish Blolo Deblolo Nsong-nsong Harmaakissamonni Korentokissamonni Mâchoiron Kportoe Durukulli Marushe Tandu Warushe Okpo isiukwu Korsie Kerlenne Sèce Ba-sagoin bethuguye Belly up Ezwagi Foubagne Gening-mat Kibbie Kokote Kor Kuilkeka Lër N'godro N'godrôh N'Godrôh Nkembè Obokun Ojan Pkatra Seese Sonfou Unguli Arius acutivelis Valenciennes, 1840 Chrysichthys acutirostris Günther, 1864 Chrysichthys buettikoferi Steindachner, 1894 Chrysichthys büttikoferi Steindachner, 1894 Chrysichthys camaronensis Günther, 1899 Chrysichthys cameronensis Günther, 1899 Chrysichthys coriscanus Günther, 1899 Chrysichthys furcatus Günther, 1864 Chrysichthys lagoensis Günther, 1899 Chrysichthys macrops (non Günther, 1864) Chrysichthys ogowensis Günther, 1899 Chysichthys nigrodigitatus (Lacepède, 1803) Melanodactylus nigrodigitatus (Lacepède, 1803) Pimelodus nigrodigitatus Lacepède, 1803 1991-03-06 2022-02-27 Möller, H. and K. 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Retrieved from http://www.fao.org/fishery/collection/asfis/en, [accessed 13/04/2015]. (Ref. 101110) Lederoun, D., P. Lalèyè, E. Vreven and P. Vandewalle0 Length-weight and length-length relationships and condition factors of 30 actinopterygian fish from the Mono basin (Benin and Togo, West Africa). Cybium 40(4):267-274. (Ref. 114212) 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) Skelton, P.H.0 Chapter 11. The freshwater fishes of Angola. p. 207-242. In B.J. Huntley, V. Russo, F. Lages and N. Ferrand (eds.) Biodiversity of Angola. Science & conservation: a modern synthesis. Springer Nature Switzerland AG, Cham, Switzerland. 549 p. (Ref. 120641) Tah, L., G.B. Goore and K.S. Da Costa0 Length-weight relationship for 36 freshwater fish species from two tropical reservoirs: Ayamé I and Buyo, Côte d'Ivoire. Rev. Biol. Trop. 60(4):1847-1856. (Ref. 123661) Sadio, O., M. Simier, F. Le Loc'h and L. Tito de Morais0 Length-weight relationships of 19 fish species from two tropical artificial reservoirs (Manantali and Selingue)in Mali, West Africa. Cybium 45(1):59-62. (Ref. 126422) Lederoun, D., V.H. Ahouanganon, R.A. Dagnide, P. Vandewalle and P. Lalèyè0 Evaluation of length-weight and length-length relationships of some of the most abundant commercial fishes from the Couffo River basin (Benin, West Africa). Fisheries & Aquatic Life 30(2):63-73. (Ref. 128374) Lederoun, D., K.R. Lalèyè, A.R. Boni, G. Amoussou, H. Vodougnon, H. Adjibogoun and P.A. Lalèyè0 Length-weight and length-length relationships of some of the most abundant species in the fish catches of Lake Nokoué and Porto-Novo Lagoon (Benin, West Africa). Lakes and Reserv. 2018:1-7. (Ref. 128905) Hontonyon, E. W.0 Fish catches among water side communities of Badagry, Lagos State, Nigeria. Lagos State University, Department of Fisheries, Thesis. (Ref. 132914) Price, S.A., S.T. Friedman, K.A. Corn, O. Larouche, K. Brockelsby, A.J. Lee, M. Nagaraj, N.G. Bertrand, M. Danao, M.C. Coyne, J.R. Estrada, R. Friedman, E. Hoeft, M. Iwan, D. Gross, J.H. Kao, B. Landry, M.J. Linares, C. McGlinn and …0 FishShapes v1: Functionally relevant measurements of teleost shape and size on three dimensions. Ecology 103(e3829):1-2. (Ref. 137577) FB-GeneralDescr-2440 http://purl.org/dc/dcmitype/Text text/html Crispina B. Binohlan 1991-03-06 00:00:00 2022-02-27 00:00:00 Biology http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2440 http://rs.tdwg.org/ontology/voc/SPMInfoItems#LifeCycle Adults occur in shallow waters of lakes (less than 4 m), over mud and fine sand bottom. Omnivorous, feed on seeds, insects, bivalves and detritus (Ref. 13851). Feeding becomes specialized with age and size, larger fish may feed on decapods and fish (Ref. 27935). Risch, L. and E.J. Vreven 2007 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) FB-DiagnosticDescr-2440 http://purl.org/dc/dcmitype/Text text/html Tobias Musschoot 2008-08-12 18:23:19 2017-08-31 21:11:31 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2440 http://rs.tdwg.org/ontology/voc/SPMInfoItems#TrophicStrategy Diagnosis: recognized by its pointed snout, the rather small mouth, and the width of the premaxillary tooth plate (1/5-1/3.5, usually 1/4, of head length); vomerine dentition represented by a square to rectangular tooth plate which begins to develop at sizes between 60 and 70 mm standard length; palatine dentition developing at sizes over 100 mm standard length, initially as isolated teeth; second or third branched dorsal-fin ray always the longest; upper caudal-fin lobe much longer than lower lobe; gill rakers long and smooth; other characters, such as length of dorsal fin, number of branched rays in anal fin, and number of gill rakers on first gill arch, are subject to intraspecific variations; sexually mature males and (some) ripe females show considerable morphological differences; such specimens have often been labelled as Chrysichthys furcatus; maturity occurs probably at a rather advanced stage (at over 200 mm SL) and leads to the inflation of head, broadening of mouth and premaxillary tooth plate, shortening of spines and overgrowth of fin-spines by thick skin, the fins becoming more rounded, and the caudal-fin lobes sometimes becoming subequal; the body acquires an emaciated, thinned down appearance (Ref. 57126, 81642). Characters only clear in mature males inreproduction: adipose fin short, base contained 8-11 times in SL and measuring 28-64% of distance between dorsal fin and adipose fin; maxillary barbel not reaching beyond dorsal spine when extended; head swollen; skin mucous; spines thick and covered with skin (Ref. 81642).Description: nasal barbels present; very short first dorsal spine; well developed second spine, weakly denticulate along posterior margin; pelvic fin with 1 unbranched and 5 branched soft rays (Ref. 57126). Anal fin with 3-7 unbranched and 8-12 branched soft rays (Ref. 57126, 81642). Post-cleithral process well developed (Ref. 75075). In the Sanaga River (Cameroon), close to the Nachtigal waterfalls, the dorsal fin is very long (length 30-40% SL versus 15-30% normally); the species then resembles C. longidorsalis from which it is distinguished by its more pointed snout, the presence of vomerine teeth and a smaller occipital process (Ref. 81642).Coloration: live specimens greyish-silvery, but may become black under stress; preserved specimens dark brown on head and back, and white on belly; adipose fin often blackish; black spot behind gill cover very distinct; fins black-edged (Ref. 57126, 81642). Risch, L.M. 2003 Claroteidae. p. 60-96 In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douce et saumâtres de l'Afrique de l'Ouest, Tome 2. Coll. Faune et Flore tropicales 40. Musée Royal de l'Afrique Centrale, Tervuren, Belgique, Museum National d'Histoire Naturalle, Paris, France and Institut de Recherche pour le Développement, Paris, France. 815 p. (Ref. 57126) FB-Morphology-2440 http://purl.org/dc/dcmitype/Text text/html Tobias Musschoot 2008-08-12 18:23:19 2017-08-31 21:11:31 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2440 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Size Dorsal spines (total): 2; Dorsal soft rays (total): 6; Analspines: 0 Risch, L.M. 2003 Claroteidae. p. 60-96 In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douce et saumâtres de l'Afrique de l'Ouest, Tome 2. Coll. Faune et Flore tropicales 40. Musée Royal de l'Afrique Centrale, Tervuren, Belgique, Museum National d'Histoire Naturalle, Paris, France and Institut de Recherche pour le Développement, Paris, France. 815 p. (Ref. 57126) FB-Distribution-2440 http://purl.org/dc/dcmitype/Text text/html Crispina B. Binohlan 1991-03-06 00:00:00 2019-09-23 21:51:05 http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2440 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Threats Africa: Senegal to Cabinda, Angola (Ref. 3236, 81642). To the north also reported from Mauritania (Ref. 55783), southwards down to the lower Congo River (Ref. 1879) and Angolan coastal rivers (Ref. 120641). 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-Uses-2440 http://purl.org/dc/dcmitype/Text text/html Crispina B. Binohlan 1991-03-06 00:00:00 2022-02-27 00:00:00 Importance http://creativecommons.org/licenses/by-nc/3.0/ WorldFish Center - FishBase General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2440 http://rs.tdwg.org/ontology/voc/SPMInfoItems#Habitat fisheries: minor commercial; aquaculture: commercial; gamefish: yes FAO 1992 FAO yearbook. Fishery statistics: catches and landings. Vol. 70: 1990. FAO Fish. Ser. 38:647 p. (Ref. 4931) Garibaldi, L. 1996 List of animal species used in aquaculture. FAO Fish. Circ. 914. 38 p. (Ref. 12108) Baensch, H.A. and R. Riehl 1991 Aquarien atlas. Bd. 3. Melle: Mergus, Verlag für Natur-und Heimtierkunde, Germany. 1104 p. (Ref. 2059) Baensch, H.A. and R. Riehl 1991 Aquarien atlas. Bd. 3. Melle: Mergus, Verlag für Natur-und Heimtierkunde, Germany. 1104 p. (Ref. 2059) FB-Migration-2440 http://purl.org/dc/dcmitype/Text text/html Crispina B. Binohlan 1991-03-06 00:00:00 2022-02-27 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ John E. Randall General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2440 Potamodromous. Migrating within streams, migratory in rivers, e.g. Saliminus, Moxostoma, Labeo. Migrations should be cyclical and predictable and cover more than 100 km. Riede, K. 2004 Global register of migratory species - from global to regional scales. Final Report of the R&D-Projekt 808 05 081. Federal Agency for Nature Conservation, Bonn, Germany. 329 p. (Ref. 51243) FB-TrophicStrategy-2440 http://purl.org/dc/dcmitype/Text text/html Pascualita Sa-a 1995-04-04 00:00:00 2020-03-27 00:00:00 http://creativecommons.org/licenses/by-nc/3.0/ John E. Randall General public nigrodigitatus Adults occur in shallow waters of lakes (less than 4 m), over mud and fine sand bottom. Omnivorous, feed on seeds, insects, bivalves and detritus (Ref. 13851). Feeds on plants, benthic invertebrates and plants (Ref. 3681). Feeding becomes specialized with age and size, larger fish may feed on decapods and fish (Ref. 27935). Whitehead, V. 1969 Investigations into the food habits of some juvenile fish in the Volta Lake during the period from October 1969 to March 1969 with some notes on distribution and abundance. University of Ghana, Volta Research Project Tech. Rep. X30. (Ref. 3681) FB-Size-2440 http://purl.org/dc/dcmitype/Text text/html Crispina B. Binohlan 1991-03-06 00:00:00 2022-02-27 00:00:00 Max. size http://creativecommons.org/licenses/by-nc/3.0/ John E. Randall General public http://www.fishbase.org/summary/SpeciesSummary.php?id=2440 65.0 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/ John E. Randall General public 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-2440 http://purl.org/dc/dcmitype/Text text/html Crispina B. Binohlan 1991-03-06 00:00:00 2022-02-27 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=2440 http://rs.tdwg.org/ontology/voc/SPMInfoItems#DiagnosticDescription demersal; potamodromous (Ref. 51243); freshwater; depth range 3 - ? m (Ref. 13851) Riede, K. 2004 Global register of migratory species - from global to regional scales. Final Report of the R&D-Projekt 808 05 081. Federal Agency for Nature Conservation, Bonn, Germany. 329 p. (Ref. 51243) Reed, W., J. Burchard., A.J. Hopson, J. Jenness and I. Yaro 1967 Fish and fisheries of Northern Nigeria. Ministry of Agriculture Northern Nigeria, Nigeria. 226 p. (Ref. 13851)