country information

Common names: [No common name]
Occurrence:
Salinity:
Abundance: | Ref:
Importance: | Ref:
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Occurrences: Occurrences Point map
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Classification / Names

Actinoptérygiens (poissons à nageoires rayonnées) > Siluriformes (Catfish) > Claroteidae (Claroteid catfishes) > Claroteinae
Noms communs | Synonymes | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Catfish, Mâchoiron, Korsie, ... more

Issue
The species Chrysichthys furcatus Günther, 1864 is considered valid in Eschmeyer (CofF ver. Mar. 2012: Ref. 89686). It is treated here a synonym of Chrysichthys nigrodigitatus (Lacepède, 1803) following Risch (1992: Ref. 7324), Risch (2003: Ref. 57126) and Geerinckx et al. (2007: Ref. 81642).

Référence principale

Risch, L. and E.J. Vreven. 2007. (Ref. 74659)
Références | Biblio | Coordinateur | Collaborateurs

Taille / Poids / Âge

Max length : 65.0 cm SL mâle / non sexé; (Ref. 3236)

Length at first maturity
L_m ?, range 14 - ? cm

Environnement

; eau douce démersal; potamodrome (Ref. 51243); profondeur 3 - ? m (Ref. 13851)

Climat / Gamme

Tropical; 22°C - 28°C (Ref. 12468), preferred ?; 15°N - 13°S, 16°W - 30°E

Distribution

Africa: Senegal to Cabinda, Angola (Ref. 3236). Reported from Mauritania (Ref. 55783). Also present in the lower Congo River (Ref. 1879).
Pays | Zones FAO | Écosystèmes | Occurrences | Introductions

Description synthétique

Épines dorsales (Total): 2; Rayons mous dorsaux (Total): 6; Épines anales 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 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 appearance (Ref. 57126).

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).

Statut dans la liste rouge de l'IUCN (Ref. 115185)

Préoccupation mineure (LC)

Menace pour l'homme

Harmless

Utilisations par l'homme

Pêcheries: intérêt commercial mineur; Aquaculture: commercial; pêche sportive: oui; Aquarium: Aquariums publics

Plus d'informations

Pays
Zones FAO
Écosystèmes
Occurrences
Introductions
Stocks
Écologie
Régime alimentaire
Éléments du régime alimentaire
Consommation alimentaire
Ration

Noms communs
Synonymes
Métabolisme
Prédateurs
Écotoxicologie
Reproduction
Maturité
Frai
Fécondité
Œufs
Développement de l'œuf

Taille/Âge
Croissance
Longueur-poids
Longueur-longueur
Fréquences de longueurs
Morphométrie
Morphologie
Larves
Dynamique des populations larvaires
Recrutement
Abondance

Références
Aquaculture
Profil d'aquaculture
Souches
Génétique
Fréquences alléliques
Héritabilité
Pathologies
Traitement
Mass conversion

Collaborateurs
Images
Stamps, Coins
Sons
Ciguatera
Vitesse
Type de nage
Surface branchiale
Otolithes
Cerveaux
Vision

Outils

Articles particuliers

Maintenance en aquarium | Articles sur l'espèce | Rapports d'aquaculture

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Sources Internet

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD₅₀ = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Niveau trophique (Ref. 69278)
3.2 ±0.41 se; Based on food items.

Résilience (Ref. 69278)
Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (K=0.12-0.65; Fec = 3,086-28,086)

Vulnérabilité (Ref. 59153)
High vulnerability (60 of 100)

Catégorie de prix (Ref. 80766)
Unknown

Chrysichthys nigrodigitatus (Lacepède, 1803)