Hemichromis elongatus, the banded jewel cichlid, is a freshwater fish found in the Okavango River and upper Zambezi River. The fish also occurs in the Congo River system and in West Africa.http://fishbase.org/summary/Hemichromis-elongatus.html
References
Further reading A Complete Guide to the FRESHWATER FISHES of Southern Africa. Paul Skelton. 2001. ISBN 978-1-86872-643-1 Hengel Visse in die Caprivi. Willem Botha. 1984.