Pseudosimochromis margaretae

Pseudosimochromis margaretae is a species of cichlid endemic to Lake Tanganyika where it is only known from the area of Kigoma in Tanzania. It prefers waters with rock-rubble substrates, mostly at less than 5 m but not deeper than 10 m. It can reach a length of 8.1 cm SL. It can also be found in the aquarium trade.

Etymology
The specific name honours Margaret Mary Smith (1916-1987), who was the first director of the J.L.B. Smith Institute of Ichthyology.