HomeFish encyclopediaRay-finned fishesSilversidesRainbowfishes, blue eyesSorong rainbowfish Sorong rainbowfish (Melanotaenia fredericki) Scientific name: Melanotaenia fredericki Fowler, 1939 The Sorong rainbowfish (Melanotaenia fredericki) is a freshwater fish of the family Melanotaeniidae. In the aquarium it needs water at 24–28°C (75–82°F). Native range: Asia, known only from Irian Jaya, Indonesia. Sorong rainbowfish care at a glanceTemperature24–28°C (75–82°F) BiologyDorsal spines (total): 5 - 7; Dorsal soft rays (total): 13-14; Anal spines: 1; Anal soft rays: 25 - 28Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMelanotaenia frederickiFamilyMelanotaeniidae (Rainbowfishes, blue eyes)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)Maximum length9.0EnvironmentFreshwater;; pH range: 6.5 - 7.5 benthopelagicClimateTropicalDistributionAsia: known only from 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