Overview

Comprehensive Description

Biology

Occurs in open water and vegetation beds of lakes and flowing water. Ingests mud containing benthic and sedimented algae (Ref. 28714).
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Distribution

Africa: known from Senegal, Casamance, Niger, Volta, Chad basin and certain coastal rivers in Guinéa-Bissau, Togo and Benin (Ref. 2938, 7095, 81281). Also in the Nile and Lake Mobutu Sese Seko (Lake Albert) (Ref. 2938, 7095).
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Physical Description

Morphology

Dorsal soft rays (total): 20 - 23; Analsoft rays: 23 - 26
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Size

Maximum size: 840 mm SL
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Max. size

84.0 cm SL (male/unsexed; (Ref. 7095)); max. published weight: 2,500 g (Ref. 3799)
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Diagnostic Description

Diagnosis: body depth 1.6-1.9x and head length 3.3-4.3x SL; caudal peduncle 0.6-0.8x long than high; short snout, 0.9-1.5x eye diameter; eye diameter 3.9-6x head length; adipose-fin base 1.4-2x longer than distance separating it from rayed dorsal fin; pointed pectoral fins, shorter than head (0.6-0.85x head length) and as long as pelvic fins; cycloid scales; scale formula 17.5-18.5/59-71/18.5-19.5; 13.5-15.5 scales between lateral line and pelvic-fin base; 20-23 dorsal fin branched rays; 23-26 anal fin branched rays (Ref. 2938, 81281). Description: eye protected by small adipose eyelid; pelvic fins inserted in advance of dorsal-fin origin (Ref. 2938, 81281). Coloration: silvery-white body; adipose-fin base greyish-black; pelvic and anal fins red except at their bases; lower lobe of caudal also red (Ref. 2938, 81281).
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Ecology

Habitat

Environment

demersal; freshwater
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Trophic Strategy

Feeds on phytoplankton, aufwuchs, detritus and benthic animals (Ref. 6160).
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Conservation

Threats

Least Concern (LC)
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: commercial
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Disclaimer

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