The type material was derived from a commercial shipment of fishes from Leopoldville, now Kinshasa, Democratic Republic of Congo, and presumed to have been collected in the vicinity. The precise extent of its distribution unknown but appears extensive in the middle and lower Congo regions, with specimen collected from Lac Fwa (Sankuru River drainage, a Congo River tributary), many hundreds of kilometres west of Kinshasa, identified as belonging to this species.

Described from a small stream in Mambanda, near Kumba, western Cameroon, and appears restricted to parts of the central Mungo River basin in that region.

Described from ‘Buala, Cameroon’, which corresponds to modern-day Bouala in Central African Republic. It’s known distribution includes parts of northern Cameroon, western Central African Republic, southeastern Chad and possibly eastern Nigeria in the upper Benue and Mayo Kébbi river systems.

The specific name was mis-used to refer to various populations of the congener A. elberti prior to 1990, and we’ve been unable to confirm if the specimen pictured here is correctly identified or not. It is listed as ‘endangered’ by the IUCN.

Described from Río Muni, Equatorial Guinea and appears endemic to south-western parts of the country, with additional collections having occurred in the Río Aye, Río Ecucu and lower Río Benito drainages.

Known only from the Batéké plateau region and surrounding area in southeastern Gabon where it’s been recorded from the Léconi-Djouya and upper Mpassa rivers, these forming a portion of the much larger Ogooué basin. Type locality is ‘6 km west of Léconi’, the latter presumably referring to the settlement of that name.

Described from a minor tributary of the Mvé River running through the village of Akoga, northwestern Gabon and has been recorded in other headwater drainages of the region including the Abanga, Mbei, Komo and Nkam. May occur across the border in southeastern Equatorial Guinea.

Described from the ‘Kribi’, now known as Kienké, river, southwestern Cameroon and has a wider distribution in the region, occurring in the Lokundje and Nyong drainages.

Described from a rainforest stream near the settlement of Mintoum, northern Gabon and has a wider distribution in the upper Ivindo River basin, a tributary of the larger Ogooué system.

Thi species was considered synonymous with the congener A. herzogi Radda 1975 for a number of years but is currently recognised as distinct.

This species’ currently accepted range stretches from eastern Nigeria (Mbam River) across central Cameroon (via the Sanaga River system of which the Mbam is a tributary) and across the border into Central African Republic (upper Mambéré basin).

It was described from ‘Jade Plateau, Cameroon’, this apparently corresponding to the Lebo River which lies in what is now the Central African Republic and presumably forms part of the Mambéré headwaters.

Type locality is Malinga, located in the middle of the Du Chaillu mountain range in Ngounié province, southern Ghana. This lies very close to Republic of the Congo, and the species may also occur across the border.