HomeFreshwater aquarium fishRainbowfish & killifishParkinson's rainbowfish Parkinson's rainbowfish (Melanotaenia parkinsoni) Scientific name: Melanotaenia parkinsoni Allen, 1980 The Parkinson's rainbowfish (Melanotaenia parkinsoni) is a freshwater fish of the family Melanotaeniidae. In the aquarium it needs water at 26–30°C (79–86°F). Native range: Oceania, Papua New Guinea between the Kemp Welsh River and Milne Bay. Parkinson's rainbowfish care at a glanceTemperature26–30°C (79–86°F) BiologyDorsal spines (total): 6 - 7; Dorsal soft rays (total): 9-12; Anal spines: 1; Anal soft rays: 18 - 23Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMelanotaenia parkinsoniFamilyMelanotaeniidae (Rainbowfishes, blue eyes)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)Maximum length11.0EnvironmentFreshwater;; pH range: 7.5 - 7.8; dH range: 8 - ? benthopelagicClimateTropicalDistributionOceania: Papua New Guinea between the Kemp Welsh River and Milne Bay.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: potentialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) More rainbowfish & killifishYellowbelly gudgeonAllomogurnda nesolepisKamaka rainbowfishMelanotaenia kamakaFlagfishJordanella floridaeBluefin killifishLucania goodeiBanded rainbowfishMelanotaenia trifasciataStriped panchaxAplocheilus lineatusSee 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