HomeFish encyclopediaRay-finned fishesSilversidesRainbowfishes, blue eyesAjamaru lakes rainbowfish Ajamaru lakes rainbowfish (Melanotaenia ajamaruensis) Scientific name: Melanotaenia ajamaruensis Allen & Cross, 1980 The Ajamaru lakes rainbowfish (Melanotaenia ajamaruensis) is a freshwater fish of the family Melanotaeniidae. Native range: Asia, known only from the Ajamaru Lakes near the center of the Vogelkop Peninsula, Irian Jaya, Indonesia. BiologyDorsal spines (total): 5 - 7; Dorsal soft rays (total): 15-19; Anal spines: 1; Anal soft rays: 21 - 27Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMelanotaenia ajamaruensisFamilyMelanotaeniidae (Rainbowfishes, blue eyes)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)Maximum length8.5EnvironmentFreshwater; benthopelagicClimateTropicalDistributionAsia: known only from the Ajamaru Lakes near the center of the Vogelkop Peninsula, Irian Jaya, Indonesia.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026