microstoma, Pseudotropheus Trewavas [E.] 1935:75 [Annals and Magazine of Natural History (Series 10) v. 16 (no. 91) (art. 6); ref. 4451] Monkey Bay, Lake Malawi [Lake Nyasa], southeastern Africa. Syntypes: (2) BMNH 1935.6.14.202-204. •Valid as Pseudotropheus microstoma Trewavas 1935 -- (Colombé 1979:38 [ref. 9005], Maréchal 1991:409 [ref. 20944]). •Valid as Tropheops microstoma (Trewavas 1935) -- (Konings 2016:202 [ref. 34521], Li et al. 2016:379 [ref. 34737]). Current status: Valid as Tropheops microstoma (Trewavas 1935). Cichlidae: Pseudocrenilabrinae. Distribution: Eastern Africa: Lake Malawi. Habitat: freshwater.