Original description as Copadichromis trewavasae:
- Konings, Ad. 1999. "Description of Three New Copadichromis Species (Labroidei; Cichlidae) from Lake Malawi, Africa". Tropical Fish Hobbyist Magazine. v. 47 (9) May; pp. 62-85 (crc00963)
Conservation: Copadichromis trewavasae is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (VU) vulnerable (2006). C. trewavasae has a rather wide distribution over several parts of the lake and although utaka are most often caught by fishermen, members of the C. mbenjii group are less affected by their efforts.