Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal; potamodromous (Ref. 51243); depth range - m (Ref. ), usually - m (Ref. ). Tropical; 0°C -
Africa: Nile River, Chad basin, Niger River, Volta River, Bandama River, Comoé River and Ouémé River (Ref. 2835, 81263).
Length at first maturity / Size / Weight / Age
Maturity: Lm 32.0  range ? - ? cm
Max length : 65.5 cm SL male/unsexed; (Ref. 123661); max. published weight: 3.4 kg (Ref. 123661)
Morphology | Morphometrics
Inhabits swamps and rivers. This species is essentially a piscivorous (Ref. 9695, 28714). Diet includes snails and crustaceans (Ref. 30488).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Gosse, J.P. and J. Daget, 2003. Polypteridae. p. 101-112. In D. Paugy, C. Lévêque and G.G Teugels (eds.) The fresh and brackish water fishes of West Africa Volume 1. Coll. faune et flore tropicales 40. Institut de recherche de développement, Paris, France, Muséum national d'histoire naturelle, Paris, France and Musée royal de l'Afrique Central, Tervuren, Belgium, 457p. (Ref. 81263)
IUCN Red List Status (Ref. 124695)
Threat to humans
Fisheries: minor commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00427 (0.00266 - 0.00685), b=3.08 (2.94 - 3.22), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic level (Ref. 69278
): 3.8 ±0.63 se; based on food items.
Vulnerability (Ref. 59153
): Moderate to high vulnerability (49 of 100) .
Nutrients (Ref. 124155
): Calcium = 155 [95, 286] mg/100g ; Iron = 1.46 [1.00, 2.30] mg/100g ; Protein = 17.4 [16.3, 18.5] % ; Omega3 = 0.253 [0.118, 0.558] g/100g ; Selenium = 89.7 [39.6, 205.9] μg/100g ; VitaminA = 25.2 [10.2, 64.3] μg/100g ; Zinc = 1.3 [0.9, 1.8] mg/100g (wet weight);