HomeFreshwater aquarium fishRainbowfish & killifishEscherich's killi Escherich's killi (Aphyosemion escherichi) Scientific name: Aphyosemion escherichi Ahl, 1924 The Escherich's killi (Aphyosemion escherichi) is a freshwater fish of the family Nothobranchiidae. In the aquarium it needs water at 22–24°C (72–75°F). Native range: Africa, Gabon, Angola and Democratic Republic of the Congo. Escherich's killi care at a glanceTemperature22–24°C (72–75°F) BiologyOccurs in coastal swamps and swampy parts of brooks and small streams in the coastal rainforest. Not a seasonal killifish. Is difficult to maintain in aquarium.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAphyosemion escherichiFamilyNothobranchiidae (African rivulines)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length5.0EnvironmentFreshwater;; pH range: 6.0 - 6.5; dH range: 10 - ? benthopelagic; non-migratoryClimateTropicalDistributionAfrica: Gabon, Angola and Democratic Republic of the Congo.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesAquarium: 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