Xenotilapia boulengeri is a species of cichlid endemic to Lake Tanganyika where it occurs in schools in areas with sandy substrates.

Its diet consists of small shrimps and copepods.

This species can reach a length of 15.3 centimetres (6.0 in) TL.

It can also be found in the aquarium trade.

[2] The specific name honours the Belgian-British zoologist George Albert Boulenger (1858-1937), in recognition of his world on the fishes of Lake Tanganyika.