Originale Referenz in :
- Ribbink, Anthony J & B.A. Marsh, A.C. Marsh, A.C. Ribbink & B.J. Sharp. 1983. "A preliminary survey of the cichlid fishes of rocky habitats in Lake Malawi". South African Journal of Zoology (Zool. Dierkunde). pp. 149-310 (crc01386)
Artenschutz: Protomelas sp. 'mbenji thick-lip' wurde nicht durch die Internationalen Union für die Erhaltung der Natur (IUCN) in der Roten Liste bedrohter Arten bewertet. Protomelas sp. 'mbenji thick-lip' is one of the few Malawi species that has been affected by overfishing of collectors of ornamental cichlids. 30 years ago males in breeding color were rather common in certain areas but nowadays one has to visit deeper reefs that are never visited by ornamental fish collectors to observe some of the males in breeding colors. The same is true for subadults and adult females. Regrettably this species continues to be collected as it demands a rather high price.