HomeFreshwater aquarium fishAfrican cichlidsBlue streak hap Blue streak hap (Labidochromis caeruleus) Scientific name: Labidochromis caeruleus Fryer, 1956 The Blue streak hap (Labidochromis caeruleus) is a freshwater fish of the family Cichlidae that grows to about 11.4 cm (4.5 in). It is easy to keep and needs water at 23–28°C (73–82°F) and a pH of 7.5–8.5. Native range: Africa, Endemic to Lake Malawi. Known only from the northwestern coast of the lake. Blue streak hap care at a glanceCare levelEasyAdult size11.4 cm (4.5 in)Temperature23–28°C (73–82°F)pH7.5–8.5 BiologyAquarium keeping: many females for one male; minimum aquarium size 80 cm.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameLabidochromis caeruleusFamilyCichlidae (Cichlids)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length8.1EnvironmentFreshwater; benthopelagicClimateTropicalDistributionAfrica: Endemic to Lake Malawi. Known only from the northwestern coast of the lake.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesAquarium: commercialResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) More african cichlidsLabidochromis chisumulaeScrapermouth mbunaLabeotropheus trewavasaeBlue mbunaLabeotropheus fuelleborniCynotilapia afraGolden mbunaMelanochromis auratusMelanochromis chipokaeSee 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