Actinopterygii (ray-finned fishes) > Siluriformes
(Catfish) > Clariidae
Etymology: Clarias: Greek, chlaros = lively, in reference to the ability of the fish to live for a long time out of water.
Environment / Climate / Range
Freshwater; demersal; potamodromous (Ref. 51243). Tropical; 8°N - 3°N
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 12 - ? cm
Max length : 29.0 cm TL male/unsexed; (Ref. 31579); max. published weight: 178 g (Ref. 31579)
Morphology | Morphometrics
soft rays: 55 - 56;
Vertebrae: 53 - 54. The light, yellowish coloration facilitates identification. Head oval-shaped in dorsal outline; snout rounded. Frontal fontanelle usually short and squat (`sole-shaped'); occipital fontanelle small and oval-shaped. The supraorbital and the `dermosphenotic' bones become sutured. Tooth plates small. Pectoral spine robust and slightly curved. gill rakers long and distantly set. Suprabranchial organ well developed. Openings of the secondary canals of the lateral line appear as irregular white spots on the body.
Africa: Ofin river and the Volta system in Ghana, in coastal rivers in Togo, in the Ouémé river in Benin, in the Ogun and the Oshun rivers, in the Niger delta and coastal rivers of Nigeria.
Found more abundant in forest floodplain ponds, grassland floodplain ponds and marshes than in rivers (Ref. 31579).
Teugels, G.G., 1986. A systematic revision of the African species of the genus Clarias (Pisces; Clariidae). Ann. Mus. R. Afr. Centr., Sci. Zool., 247:199 p.
IUCN Red List Status (Ref. 90363)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
CollaboratorsPicturesStamps, CoinsSoundsCiguateraSpeedSwim. typeGill areaOtolithsBrainsVision
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00708 (0.00441 - 0.01137), b=3.01 (2.87 - 3.15), based on LWR estimates for species & Genus-BS (Ref. 93245
Trophic Level (Ref. 69278
): 3.7 ±0.6 se; Based on diet studies.
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months (tm=1; K=0.89; mean Fec=9,596).
Vulnerability (Ref. 59153
): Low vulnerability (19 of 100) .