HomeFish encyclopediaRay-finned fishesPerch-like fishCichlidsCyan hap Cyan hap (Pseudotropheus cyaneus) Scientific name: Pseudotropheus cyaneus Stauffer, 1988 The Cyan hap (Pseudotropheus cyaneus) is a freshwater fish of the family Cichlidae. Native range: Africa, Probably endemic to Chinyamwezi Island. BiologyOccurs all around Chinyamwezi near small rocks. Feeds on algae from the biocover on rocks as well as on plankton from the open water.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePseudotropheus cyaneusFamilyCichlidae (Cichlids)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length7.8Depth range40 m (131 ft)EnvironmentFreshwater; demersal; depth range ? - 40 mClimateTropicalDistributionAfrica: Probably endemic to Chinyamwezi Island.Conservation status (IUCN)Vulnerable (VU) (D2)Threat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026