Enteromius pumilus (Boulenger 1901)

Diagnosis: last simple dorsal-fin ray smooth on hind margin; scale formula 3.5/19-21/2.5; 1.5 scales between lateral line and pelvic-fin base; 8-9 scales around caudal peduncle; lateral-line scales distinctly larger than other scales on sides; 8 branched dorsal fin rays; no barbels; lateral line incomplete, deeply depressed below dorsal fin; maximum reported size 23 mm SL; back blackish; dorsal and anal fins with black band; black bar on eye (Ref. 2940, 81282). Description: very small species; mouth small and terminal, without barbels; lateral line incomplete, reduced to a few pored scales; D:III,8; A:III,5; P:14; V:I,7 (Ref. 2940, 81282).Coloration: yellowish on back in life, with black-edged scales; black stripe on each side of head from snout to gill cover; oblique reddish stripe and 1 or 2 black stripes on dorsal and anal fins (Ref. 2940, 81282).

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: 8

Enteromius pumilus is a species of ray-finned fish in the genus Enteromius from Sudan and Ethiopia, possibly Chad.