HomeFreshwater aquarium fishRainbowfish & killifishRedspot panchax Redspot panchax (Aphyosemion cognatum) Scientific name: Aphyosemion cognatum Meinken, 1951 The Redspot panchax (Aphyosemion cognatum) is a freshwater fish of the family Nothobranchiidae. In the aquarium it needs water at 22–24°C (72–75°F). Native range: Africa, lower and middle Congo River basin (Republic of Congo and Democratic Republic of the Congo). Redspot panchax care at a glanceTemperature22–24°C (72–75°F) BiologyOccurs in brooks, swamps and pools in the rainforest. Not a seasonal killifish. Is easy to maintain in the aquarium.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAphyosemion cognatumFamilyNothobranchiidae (African rivulines)OrderCyprinodontiformes (Live bearers, Killifishes and Rivulines)ClassActinopterygii (Ray-finned fishes)Maximum length5.0EnvironmentFreshwater;; pH range: 6.5 - 6.6; dH range: ? - 12 benthopelagic; non-migratoryClimateTropicalDistributionAfrica: lower and middle Congo River basin (Republic of Congo and Democratic Republic of the Congo).Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesAquarium: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Fec = 200) 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