Raiamas nigeriensis (Daget 1959)

Diagnosis: body depth 3.5-5.3x and head length 4.2-5.1x SL; eye diameter 2.8-3.5x head length (Ref. 2940, 81282). Scale formula: 7.5-8.5/41-46/(3.5)4.5(5.5); 14 scales around caudal peduncle; 8 dorsal-fin branched rays; 13-15 anal-fin branched rays (Ref. 2940, 81282, 81639). Description: mouth terminal, without barbels; scales with divergent striae; 2 scales between lateral line and pelvic fin base; dorsal fin falciform, originating in advance of anal fin; caudal fin forked (Ref. 81639). D: III,8; A: III,13-15; P: 15-16; V: I,8 (Ref. 81282, 81639). Coloration: silvery, with greenish-grey back in life; sides with 8-10 dark vertical bars, longer on posterior part of body; anal, dorsal and caudal fins tinged with orange-red (Ref. 2940, 81282, 81639).

Potamodromous. Migrating within streams, migratory in rivers, e.g. Saliminus, Moxostoma, Labeo. Migrations should be cyclical and predictable and cover more than 100 km.

Dorsal spines (total): 0; Dorsal soft rays (total): 11; Analspines: 0; Analsoft rays: 16 - 18

Affinities: may be sympatric with R. senegalensis and R. steindachneri and has always been mistaken for R. senegalensis, which is the reason for it not being discovered. Maximum TL was recorded at 12.5 cm (Ref. 2801).

fisheries:

Raiamas nigeriensis is a species of cyprinid fish in the genus Raiamas.