Chrysichthys nigrodigitatus (Lacepède, 1803)

Bagrid catfish
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Native range | All suitable habitat
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Chrysichthys nigrodigitatus   AquaMaps   Data sources: GBIF OBIS
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Chrysichthys nigrodigitatus
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Classificação / Names Nomes comuns | Sinónimos | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (peixes com raios nas barbatanas) > Siluriformes (Catfish) > Claroteidae (Claroteid catfishes) > Claroteinae
Etymology: Chrysichthys: Greek, chrysos = golden + Greek, ichthys = fish (Ref. 45335).  More on author: Lacepède.

Environment: milieu / climate zone / depth range / distribution range Ecologia

; Água doce demersal; potamódromo (Ref. 51243); intervalo de profundidade 3 - ? m (Ref. 13851).   Tropical; 22°C - 28°C (Ref. 12468); 15°N - 13°S, 16°W - 30°E

Distribuição Países | Áreas FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Africa: Senegal to Cabinda, Angola (Ref. 3236, 81642). Reported from Mauritania (Ref. 55783). Also present in the lower Congo River (Ref. 1879).

Length at first maturity / Tamanho / Peso / Idade

Maturity: Lm ?, range 14 - ? cm
Max length : 65.0 cm SL macho/indeterminado; (Ref. 81642)

Descrição breve Morfologia | Morfometria

Espinhos dorsais (total): 2; Raios dorsais moles (total): 6; Espinhos anais 0. 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 in reproduction: 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).

Biologia     Glossário (ex. epibenthic)

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).

Life cycle and mating behavior Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas

Referência principal Upload your references | Referências | Coordenador | Colaboradores

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)

Categoria na Lista Vermelha da IUCN (Ref. 119314)

  Preocupação menor (LC) ; Date assessed: 01 May 2009

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para o homem

  Harmless





Utilização humana

Pescarias: pouco comercial; Aquacultura: espécies comerciais; peixe desportivo: sim
FAO(Aquacultura: produção; pescarias: produção; publication : search) | FishSource |

Mais informação

Nomes comuns
Sinónimos
Metabolismo
Predadores
Ecotoxicologia
Reprodução
Maturidade
Desova
Agregação para desova
Fecundidade
Ovos
Desenvolvimento dos ovos
Referências
Aquacultura
Perfil para aquacultura
Estirpes
Genética
Frequência dos alelos
Hereditariedade
Doenças
Processamento
Mass conversion
Colaboradores
Fotografias
Stamps, Coins Misc.
Sons
Ciguatera
Velocidade
Tipo de natação
Área branquial
Outras referências
Cérebros
Visão

Ferramentas

Relatórios especiais

Descarregue XML

Fontes da internet

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00912 (0.00718 - 0.01158), b=3.01 (2.94 - 3.08), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
Nível Trófico (Ref. 69278):  3.2   ±0.41 se; Based on food items.
Resiliência (Ref. 69278):  Médio, tempo mínimo de duplicação da população 1,4 - 4,4 anos (K=0.12-0.65; Fec = 3,086-28,086).
Vulnerabilidade (Ref. 59153):  High vulnerability (60 of 100) .
Categoria de preço (Ref. 80766):   Unknown.