Original description as Haplochromis percoides:
- Boulenger, George Albert. 1906. "Descriptions of new fishes discovered by Mr E. Degen in Lake Victoria". Annals and Magazine of Natural History. (ser. 7) 17; pp. 433-452 (crc00190)
Conservation: Haplochromis percoides is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (CR) critically endangered (2010). As no specimens has been recorded since its discovery, we can reasonably think that this species is endangered or extinct.