Original description as Pelmatochromis exsul:
- Trewavas, Ethelwynn. 1933. "Scientific results of the Cambridge Expedition to the East African Lakes, 1930-1. --11. The cichlid fishes". Journal of the Linnean Society of London (Zoology). v. 38; n. 259; pp. 309-341 (crc01010)
Conservation: Hemichromis exsul is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (LC) least concern (2010).