Nannopetersius ansorgii
Nannopetersius ansorgii is a species of freshwater ray-finned fish belonging to the family Alestidae, the African tetras. It is found in the central Africa in the Benito, Chiloango, Kouilou, Loeme and Ogooué rivers of Gabon and Equatorial Guinea and the Bengo and Congo River basins of Angola and Democratic Republic of the Congo.