Africa: Cameroon to the Republic of Congo, and the entire Congo River, Okavango and Zambesi system (Ref. 81260). Also reported from west Africa (Guinea, Sierra Leone, Liberia, Togo, Benin, Nigeria) (Ref. 43352, 81260), but this needs confirmation (Ref. 53405). Upper Zambezi and (some) Congo populations may represent a different species (Ref. 81260).