Original description as Labeotropheus trewavasae:
- Fryer, Geoffrey. 1956. "A new species of Labeotropheus from Lake Nyasa, with a redescription of Labeotropheus fuelleborni Ahl, and some notes on the genus Labeotropheus". Revue de Zoologie et Botanique Africaines. v. 54 (3-4); pp. 280-289 (crc00116)
Conservation: Labeotropheus trewavasae is evaluated by the international union for the conservation of nature in the iucn red list of threatened species as (LC) least concern (2006). Labeotropheus trewavasae is a common rock-dwelling mbuna and a strict herbivore, normally not interested in worms dangling from hooks. These characteristics make it unlikely to be caught either by net or hook and line.