Niger

This species appears to be restricted to the Imo and Niger drainages in Nigeria but the full extent of its distribution is unclear. Type locality is 'Aba, Lower Niger, Nigeria', corresponding to the city of Aba in Abia state, southern Nigeria which lies on the Aba River, a tributary of the Imo. Nigeria has lost 95 % of its original rainforest cover, num...

Endemic to Nigeria, where it occurs in the Ogun and lower Niger river systems. Despite its popularity in the aquarium hobby it's relatively scarce in the wild and is known from less than 10 localities, all lying in an area where deforestation and pollution are uncontrolled and continue to occur extensively.

The genus Barbus is in something of a confused state classification-wise. While there exist almost 340 putative species the vast majority of them do not appear to be closely-related to the genus Barbus sensu stricto. Berrebi et al. (1996) proposed that only the European, Southwest Asian and North African representatives should be included in Barbus (around 20 species) and that 'all species of Barbus sen...

Described from Assinie-Mafia in south-eastern Côte d'Ivoire (Ivory Coast), western Africa but currently accepted to be extensively distributed in coastal river drainages of central western Africa from the Saint John River, central Liberia to the Cross River drainage, in southeastern Nigeria and southwestern Cameroon. It also occurs in the Niger and its major tributary the Benue (Bénoué) and has thus been recorded from Benin, Burkina Faso, Cameroon, Côte d'Ivoire, Equatorial Guinea, Ghana, Guinea, Liberia, Mali, Niger, Nigeria and Togo.

Following the key of Romand (1992) this species can be told apart from congeners by the following combination of characters: adult size > 40 mm SL; large, dark, transverse bars and some reddish-brown pigmentation on flanks; longitudinal bands more-or-less defined; longitudinal bands composed of small red spots; caudal-fin subquadrangular caudal fin; 11-13 anal-fin rays; 16-17 dorsal-fin rays; 7-8 anal-fin rays located anterior to dorsal-fin origin.

Distributed throughout coastal regions north and westwards from Gabon through Equatorial Guinea, Cameroon, Nigeria, Benin and Togo as far as Ghana although some consider it restricted to northwestern Gabon and Equatorial Guinea with the remaining populations representing various subspecies (see 'Notes'). Type locality is 'Gaboon River', which presumably refe...

Following Bonou and Teugels (1985), P. africana can be distinguished from congeners by the following combination of characters: colour pattern unique, comprising a series of 8-11 dark, chevron-shaped markings extending along the body posterior to the pectoral fins; 19-24 scales in the transverse series; lateral line complete with 73-83 pored scales; 45-48 dorsal-fin rays 45-48; 32-35 anal-fin rays.

This species is widely-distributed in lowland, coastal regions of Togo, Benin and Nigeria as far as the Cross River delta, and occurs at some inland localities along the lower Niger River. Populations in Cameroon, Equatorial Guinea and Gabon are now considered to represent other species.