HomeFreshwater aquarium fishAfrican cichlidsPseudotropheus demasoni Pseudotropheus demasoni Scientific name: Pseudotropheus demasoni Konings, 1994 Pseudotropheus demasoni is a freshwater fish of the family Cichlidae that grows to about 6 cm (2.4 in). It is aggressive and needs a tank of at least 150 L (40 US gal), water at 25–28°C (77–82°F) and a pH of 7.8–8.6. Native range: Africa, Endemic to Lake Malawi. Pombo Rocks, Tanzania. Pseudotropheus demasoni care at a glanceTemperamentAggressiveAdult size6 cm (2.4 in)Minimum tank150 L (40 US gal)Temperature25–28°C (77–82°F)pH7.8–8.6DietHerbivore Species factsScientific namePseudotropheus demasoniFamilyCichlidae (Cichlids)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length6.3EnvironmentFreshwater; demersalClimateTropicalDistributionAfrica: Pombo Rocks, Lake Malawi [Lake Nyasa], Tanzania.Conservation status (IUCN)Vulnerable (VU) (D2)Threat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More african cichlidsNeolamprologus bifasciatusLamprologus speciosusNeolamprologus similisRed zebraMaylandia estheraeSciaenochromis fryeriJewelfishHemichromis bimaculatusSee 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