Environment: milieu / climate zone / depth range / distribution range
Ecologia
; acqua dolce benthopelagico. Subtropical; 32°N - 3°N
Africa: Nile River and lakes once connected to the Nile system (Ref. 2801, 2959); Chad, Niger, Senegal, Volta, Ouémé and Ogun river basins (Ref. 2940, 81282); coastal rivers (Sassandra, Bandama, Niouniourou, Comoé and Tano) of Côte d'Ivoire and Ghana, west of the Volta basin. Following subspecies are recognized: Labeobarbus bynni bynni; Labeobarbus bynni occidentalis and Labeobarbus bynni waldroni.
Size / Peso / Age
Maturity: Lm ? range ? - ? cm
Max length : 82.0 cm TL maschio/sesso non determinato; (Ref. 2801)
Spine dorsali (totale) : 1; Raggi dorsali molli (totale) : 13 - 14; Raggi anali molli: 8. Diagnosis: last simple dorsal-fin ray forming ossified spine longer than head in specimens over 150 mm SL. B. bynni occidentalis: scale formula 5.5/26-31/4.5-5.5; 2.5-3 scales between lateral line and middle of belly, behind pelvic-fin origin; 12 scales around caudal peduncle; dorsal fin with 4 unbrached and 9 branched rays; anal fin with 3 unbranched and 5 branched rays; pectoral fin with 16-19 rays; pelvic fin with 1 unbranched and 8 branched rays; 3-5/12-15 gill rakers on first gill arch (Ref. 2940, 81282). B. bynni waldroni: scale formula 4.5/24-28/4.5; 2.5 scales between lateral line and middle of belly, behind pelvic-fin origin; 12 scales around caudal peduncle; dorsal fin with 4 unbranched and 9-10 branched rays; anal fin with 3 unbranched and 5 branched rays; pectoral fin with 1 unbranched and 14-16 soft rays; pelvic fin with 1 unbranched and 8 branched rays; 3-6/14-17 gill rakers on first gill arch (Ref. 2940, 81282).
Feed on crustaceans, insects, molluscs and organic debris; in the Jebel Aulia Reservoir, annual spawning coincides with the onset of the floods; fecundity estimates ranged from 72 x 1,000 at 33 cm (4 yrs.) to over 14 x 10,000 at 74 cm (8 yrs) (Ref. 28714).
Life cycle and mating behavior
Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve
Lévêque, C. and J. Daget, 1984. Cyprinidae. p. 217-342. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ORSTOM, Paris and MRAC, Tervuren. Vol. 1. (Ref. 2801)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Pesce da pesca sportiva: si
Strumenti
Special reports
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Fonti Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00933 (0.00422 - 0.02065), b=3.01 (2.82 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.1 ±0.40 se; based on food items.
Generation time: 4.2 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
Resilienza (Ref.
120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (K=0.26).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (39 of 100).
