| Family: |
Alestidae (African tetras) |
| Max. size: |
25 cm TL (male/unsexed); max.weight: 300.0 g |
| Environment: |
demersal; freshwater; pH range: 6.80000019073486 - 7.80000019073486, |
| Distribution: |
Africa: Southern Ghana and southern Nigeria (Lagos and Bénoué basin) (Ref. 2880, 81279). Also recorded in Sanaga River basin, Cameroon (Ref. 52331). |
| Diagnosis: |
Anal spines: 0-0; Anal soft rays: 16-18. Diagnosis: parietal fontanella absent in adults and porelinke in juveniles, disappearing with growth; snout long, comprised three times in head length; dorsal-fin origin distincly behind pelvic-fin insertions; head broad; adults large-sized; no sexual dimorphism affecting anal-fin shape in adult males; body depth less than three times in the standard length in adults; 8-12 teeth in outer premaxillary row; 4.5 scales above lateral line; 21-23 lateral line scales; 13-15 anal fin branched rays; 18-20 gill rakers on lower part of first branchial arch (Ref. 2880, 81279).
Description: supraorbital bone thick; even in largest specimen, snout projecting only slightly beyond lower jaw; dorsal-fin origin at about midpoint of space between pelvic-fin insertions and anal-fin origin; anal fin with 3 branched and 13-15 unbranched rays (Ref. 2880, 81279).
Coloration: uniformly brown back, silvery sides and white belly (Ref. 2880, 81279). |
| Biology: |
Affinities: B. macrocephalus |
| IUCN Red List Status: |
Endangered (EN); Date assessed: 12 August 2019 (B2ab(iii)) Ref. (130435)
|
| Threat to humans: |
harmless |
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