HomeFreshwater aquarium fishAfrican cichlidsScrapermouth mbuna Scrapermouth mbuna (Labeotropheus trewavasae) Scientific name: Labeotropheus trewavasae Fryer, 1956 The Scrapermouth mbuna (Labeotropheus trewavasae) is a freshwater fish of the family Cichlidae that grows to about 11 cm (4.3 in). It is easy to keep and semi-aggressive, needs carefully chosen tank mates and needs a tank of at least 210 L (55 US gal), water at 22–28°C (72–82°F) and a pH of 7.5–8.5. Native range: Africa, Lake Malawi. Scrapermouth mbuna care at a glanceCare levelEasyTemperamentSemi-aggressiveCommunity tankWith cautionAdult size11 cm (4.3 in)Minimum tank210 L (55 US gal)Temperature22–28°C (72–82°F)pH7.5–8.5Hardness5–12 dGH (89–214 ppm)DietOmnivore. Accepts flakes, frozen foods and live foods. BiologyScrapes algae off rocks and also takes in small crustaceans and worms.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameLabeotropheus trewavasaeFamilyCichlidae (Cichlids)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length11.7EnvironmentFreshwater;; pH range: 8.0 - 8.0; dH range: 5 - 12 benthopelagicClimateTropicalDistributionAfrica: Boadzulu, Thumbi West, Zimbawe, Mumbo, Nakantenga, Maleri, Nankoma and Namalenje Islands, Masinje Rocks, Chirombo Point to Nkhata Bay and Lion's Cove to Chitande in Lake Malawi.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesAquarium: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Fec More african cichlidsBlue mbunaLabeotropheus fuelleborniBlue streak hapLabidochromis caeruleusLabidochromis chisumulaeCynotilapia afraHaplochromis borleyi redfinCopadichromis borleyiGolden mbunaMelanochromis auratusSee all african cichlids SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0. Aquarium care parameters compiled, checked and converted to metric and imperial units by Guppies.za.net.Last updated 28 September 2026