Classification / Names
Common names from other countries
Issue
Three subspecies were described on the basis of different morphological characters: tchadense Blache, 1964, soudanensis and eburneensis Paugy, 1986. However they should rather be considered as populations having equivalent ecological characteristics (D. Paugy, pers,comm 21 Mar. 2013).
Main reference
Size / Weight / Age
Max length : 43.0 cm TL male/unsexed; (Ref. 2703); 40.0 cm TL (female); common length :440 cm TL (female); max. published weight: 500.00 g (Ref. 3023); max. reported age: 6 years (Ref. 2758)
Length at first maturity
Lm 20.9, range 25 - ? cm
Environment
Freshwater; benthopelagic; pH range: 6.5 - 7.8; dH range: ? - 30; potamodromous (Ref. 51243)
Climate / Range
Tropical; 15°C - 35°C, preferred ?
Distribution
Africa: Senegal, Gambia, the coastal basins of the Côte d'Ivoire (Comoé, Bandama and Sassandra), Volta, Niger/Benué and Chad basin (Ref. 2880, 81279). Also present in Nile, Omo, Lake Albert and Lake Turkana (Ref. 2880). Three populations - previously as subspecies - may be distinguished by slight morphological differences but they have the same ecological charasterics: in Nile River, Lake Albert, Omo River and Lake Turkana ('baremoze'); in Senegal River, Gambia River, Tominé River, Volta basin, Niger basin and Chad basin ('soudaniensis'); in coastal basins of Côte d'Ivoire, namely Sassandra River, Bandama River and Comoé River ('eburneensis') (Ref. 42019).
Countries | FAO areas | Ecosystems | Occurrences | Introductions
Short description
Dorsal
spines
(total): 0;
Dorsal
soft rays
(total): 10;
Anal
spines: 0;
Anal
soft rays: 22 - 31;
Vertebrae: 41 - 49. Diagnosis: at least 30 gill rakers on lower limb of first gill arch (30-41); 38-51 lateral line scales, with 7.5-9.5 above and 3.5 below; anal fin with three simple rays and 19-28 branched rays; dorsal-fin origin distinctly behind level of pelvic-fin insertions (Ref. 2759, 81279).
IUCN Red List Status (Ref. 115185)
Threat to humans
Harmless
Human uses
Fisheries: highly commercial
More information
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Tools
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Estimates of some properties based on models
Phylogenetic diversity index
PD50 = 0.5078 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)
Trophic Level
3.1 ±0.35 se; Based on food items.
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.42; tm=2-3; tmax=5)
Vulnerability
Low vulnerability (22 of 100)
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