Original description as Serranochromis gracilis:
- Greenwood, Peter Humphry. 1984. "The haplochromine species (Teleostei, Cichlidae) of the Cunene and certain other Angolan rivers". Bulletin of the British Museum (Natural History) Zoology Series. v. 47(n. 4); pp. 187-239 (crc01553)
Conservation: Chetia gracilis is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (LC) least concern (2007).