| Family: |
Cyprinidae (Minnows or carps), subfamily: Labeoninae |
| Max. size: |
29.1 cm SL (male/unsexed) |
| Environment: |
benthopelagic; freshwater |
| Distribution: |
Africa: Lower Guinea endemic, found in north-western Cameroon in following rivers: Noun, Djerem, Sanaga, Kelle, Mape, Assamba, Mbam, Mekay, Meng, Nchi, Nkoup, Mvi, Mevobo , tributary of Kim and northern Mifi (Ref. 81639). Records of Labeo chariensis from Cameroon may in fact refer to Labeo nunensis. |
| Diagnosis: |
Dorsal soft rays (total): 11-12; Anal soft rays: 8-8; Vertebrae: 32-34. Diagnosis: snout very prominent and with a more or less deep transverse furrow and numerous tubercles; some specimens additionally have numerous small, wart-like tubercles dorsally on head; small fleshy appendage at anterior end of snout; interocular profile flattened; scale formula: 38-40 (39 commonly observed); 4.5-6.5 (5.5 commonly observed, exceptionally 4.5); 3.0-4.5 (4.0 commonly observed); 16-19 (16 commonly observed); dorsal fin with 11-12 (11 commonly observed) branched rays; upper edge of dorsal fin falciform (or deeply concave); 33-34 (33 commonly observed) vertebrae; ventral fin origin located under the 4th branched dorsal ray; genital orifice situated distant from anal fin origin; sometimes a dark brown longitudinal band is present (Ref. 81639).
Description: dorsal profile in front of dorsal fin curved; eyes relatively small, diameter 15.8-26.9% HL and positioned supero-laterally; pectoral fins small and distant from ventral fins ventral fin often reaching to the genital orifice(Ref. 81639).
Coloration: body dark brown dorsally, yellowish brown ventrally; sometimes with dark longitudinal band along flanks; fins greyish or clear; according to Ref. 94919 these fishes are greyish dorsally and on flanks, white yellowish ventrally (Ref. 81639). |
| Biology: |
|
| IUCN Red List Status: |
Least Concern (LC); Date assessed: 16 February 2009 Ref. (130435)
|
| Threat to humans: |
harmless |
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