HomeFreshwater aquarium fishRainbowfish & killifishCongo killi Congo killi (Aphyosemion congicum) Scientific name: Aphyosemion congicum Ahl, 1924 The Congo killi (Aphyosemion congicum) is a freshwater fish of the family Nothobranchiidae. In the aquarium it needs water at 20–24°C (68–75°F). Native range: Africa, between Kwango and Gamba Rivers, Kasai River drainage, southeast of Kinshasa (Democratic Republic of Congo). Congo killi care at a glanceTemperature20–24°C (68–75°F) BiologyOnly known from brooks under forest cover. Not a seasonal killifish. Is difficult to maintain in aquarium.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAphyosemion congicumFamilyNothobranchiidae (African rivulines)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length4.5EnvironmentFreshwater;; pH range: 6.5 - 7.2 benthopelagic; non-migratoryClimateTropicalDistributionAfrica: between Kwango and Gamba Rivers, Kasai River drainage, southeast of Kinshasa (Democratic Republic of Congo).Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessUsesFisheries: of no interest; aquarium: commercial More rainbowfish & killifishTwostripe lyretailAphyosemion bivittatumRed-Tailed SilversideBedotia geayiLyretail panchaxAphyosemion australeCelebes rainbowfishMarosatherina ladigesiCelebes rainbowTelmatherina celebensisMarmorated medakaOryzias marmoratusSee all rainbowfish & killifish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026