The scrapermouth mbuna (Labeotropheus trewavasae) is a species of cichlid endemic to Lake Malawi where it prefers areas with rocky substrates.

This species can reach a length of 11.7 centimetres (4.6 in) TL.

This species can also be found in the aquarium trade.

[2] Its specific name honours the British ichthyologist Ethelwynn Trewavas (1900-1993) of the British Museum (Natural History).

This Cichlidae-related article is a stub.