HomeFish encyclopediaRay-finned fishesSilversidesRainbowfishes, blue eyesIrian Jaya rainbowfish Irian Jaya rainbowfish (Melanotaenia irianjaya) Scientific name: Melanotaenia irianjaya Allen, 1985 The Irian Jaya rainbowfish (Melanotaenia irianjaya) is a freshwater fish of the family Melanotaeniidae. In the aquarium it needs water at 23–26°C (73–79°F). Native range: Asia, Vogelkop and Bomberai Peninsula in Irian Jaya, Indonesia. Irian Jaya rainbowfish care at a glanceTemperature23–26°C (73–79°F) BiologyDorsal spines (total): 5 - 7; Dorsal soft rays (total): 12-16; Anal spines: 1; Anal soft rays: 21 - 26Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMelanotaenia irianjayaFamilyMelanotaeniidae (Rainbowfishes, blue eyes)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)Maximum length8.5EnvironmentFreshwater;; pH range: 6.0 - 7.0; dH range: ? - 15 benthopelagicClimateTropicalDistributionAsia: Vogelkop and Bomberai Peninsula in Irian Jaya, Indonesia.Conservation status (IUCN)Not EvaluatedThreat 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