Enteromius aboinensis (Boulenger, 1911)
Enteromius aboinensis
photo by Bornstein, A.

Family:  Cyprinidae (Minnows or carps), subfamily: Smiliogastrinae
Max. size:  7 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater,
Distribution:  Africa: described from the Aboina River, an affluent of the Cross River (Ref. 2801, 2940, 81282, 81639), but possibly also present in other coastal basins in Nigeria and Cameroon (Ref. 81639). Reported from BenouĂ© River (Ref. 13331).
Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 11-11; Anal spines: 0-0; Anal soft rays: 8-8. Diagnosis: mouth subterminal; two pairs of moderately developed barbels; anterior pair reaching or slightly beyond anterior border of eye, posterior pair reaching to the posterior half of eye; lateral line complete and straight; 24-27 scales in lateral line; 3.5 scales between lateral line and dorsal fin origin; 3.5 scales between lateral line and mid-belly; 2.5 scales between lateral line and pelvic-fin base; 12 scales around caudal peduncle; dorsal fin with slightly concave border; 8 branched dorsal fin rays; last simple dorsal-fin ray flexible and smooth on hind margin; no black spots; black stripe in middle of sides from opercle to end of caudal peduncle, terminating in small round spot at base of caudal fin; dorsal fin with spot slightly above mid-height of fin, but tip of fin colorless; maximum reported size 70 mm SL (Ref. 2940, 81282, 81639). Description: medium-sized species (Ref. 81639). Dorsal profile slightly convex; pit-lines on head clearly visible; D:III,8; A:III,5; P:15-16; V:8; gill rakers on first branchial arch: 1-2+4-5 (Ref. 2940, 81282, 81639), plus papillous tissue on lower limb of first arch (Ref. 81639). Coloration: black band along middle of sides, from gill cover to posterior part of caudal peduncle, ending in round spot at caudal-fin base; dorsal fin with black spot at mid-height, but fin-tip colorless as in B. callipterus; lateral-line scales, as well as scales on back, lined with pigment, the margination being more intense along lateral line (Ref. 2940, 81282, 81639).
Biology:  Affinities: belongs to B. ablabes group (Ref. 2940). Maximum TL recorded: 8.0 cm (Ref. 2801).
IUCN Red List Status: Least Concern (LC); Date assessed: 06 May 2019 Ref. (130435)
Threat to humans:  harmless


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