ephippium, Petrochromis trewavasae Brichard [P.] 1989:401 [Pierre Brichard's book of cichlids and all the other fishes of Lake Tanganyika; ref. 20697] Lake Tanganyika. MRAC. Type information and locality not given in original description. •Synonym of Petrochromis trewavasae Poll 1948, but a valid subspecies as described -- (Maréchal & Poll 1991:373 [ref. 20946]). •Valid as Petrochromis ephippium Brichard 1989 -- (Konings 2015:59 [ref. 34660], Konings 2019:60 [ref. 36983]). Current status: Valid as Petrochromis ephippium Brichard 1989. Cichlidae: Pseudocrenilabrinae. Distribution: Lake Tanganyika, Africa. Habitat: freshwater.