Actinopteri (ray-finned fishes) > Carangaria/misc
() > Latidae
Etymology: Lates: Latin, lateo, latere = to be hidden. More on author: Linnaeus.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal; potamodromous (Ref. 51243); depth range 10 - 60 m (Ref. 34290). Tropical; 27°N - 7°S
Africa: widespread throughout the Nilo-Sudan region of Africa, occurring commonly in all major river basins including the Senegal, Niger, Volta, Chad (Ref. 81285, 81652) and Nile (Ref. 3636, 81652). Found almost everywhere in West Africa, except in Gambia (Ref. 81285). Also present in the Congo basin and lakes Albert, Turkana/Rudolph and Tana (Ref. 3636). Several countries report adverse ecological impact after introduction.
Length at first maturity / Size / Weight / Age
Maturity: Lm 74.3, range 53 - 85 cm
Max length : 200 cm TL male/unsexed; (Ref. 58490); common length : 100.0 cm SL male/unsexed; (Ref. 34290); max. published weight: 200.0 kg (Ref. 3900)
(total): 7 - 8;
soft rays: 7 - 9. Diagnosis: mouth large and protrusible, lower jaw (slightly) prominent (Ref. 81285, 81652). Numerous villiform teeth present in jaws, on palate (Ref. 81285, 81652) and vomer (Ref. 81652). Preorbital/lachrymal (Ref. 4967, 81652) and preopercle (Ref. 4967, 81285, 81652) denticulate. Strong, prominent opercular spine present (Ref. 4967, 81285, 81652) on free edge of opercle, and a smaller one dorsal to it (Ref. 81652). Caudal fin rounded (Ref. 4967, 81285, 81652). Scales ctenoid, 54-74 along lateral line, followed by 6-8 pored scales on caudal-fin base; ceratobranchial (lower limb) of first gill arch with 12-14 gill rakers (Ref. 81285).
Coloration: body uniformly silvery (Ref. 81285) or dark greyish-blue dorsally, greyish-silver on flank and ventrally (Ref. 34290, 81652). Fins greyish; interior of eye conspicuously yellowish (Ref. 81285). Juveniles brownish with lighter marbling (Ref. 81285) on head and flanks (Ref. 81652).
Inhabits channels, lakes and irrigation canals; adults inhabit deep water, while juveniles are found in shallow water (Ref. 81652). Feeds on fish especially clupeids and Alestes (Ref. 13851); smaller fish also feed on larger crustaceans and insects. Juveniles are planktivorous (Ref. 28714). Threatened due to over harvesting (Ref. 58490). No length type given but assumed to be in TL. Maximum reported size of 180.0 cm corresponding to a weight of 164 kg in Lake Albert (Ref. 81285).
Teugels, G.G., C. Lévêque, D. Paugy and K. Traoré, 1988. État des connaissances sur la faune ichtyologique des bassins côtiers de Côte d'Ivoire et de l'ouest du Ghana. Rev. Hydrobiol. Trop. 21(3):221-237. (Ref. 272)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Fisheries: highly commercial; aquaculture: commercial; gamefish: yes
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5006 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00955 (0.00770 - 0.01184), b=3.04 (2.98 - 3.10), in cm total length, based on LWR estimates for this species (Ref. 93245
Trophic level (Ref. 69278
): 4.5 ±0.8 se; based on diet studies.
Generation time: 5.8 (4.2 - 12.1) years. Estimated as median ln(3)/K based on 10 growth studies.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.17-0.19; tm=2-3).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (47 of 100) .