HomeFish encyclopediaRay-finned fishesSilversidesRainbowfishes, blue eyesAxelrod's rainbowfish Axelrod's rainbowfish (Chilatherina axelrodi) Scientific name: Chilatherina axelrodi Allen, 1979 The Axelrod's rainbowfish (Chilatherina axelrodi) is a freshwater fish of the family Melanotaeniidae. In the aquarium it needs water at 27–30°C (81–86°F). Native range: Oceania, Known only from the Yungkiri Stream in Papua New Guinea. Axelrod's rainbowfish care at a glanceTemperature27–30°C (81–86°F) BiologyDorsal spines (total): 6 - 8; Dorsal soft rays (total): 11-13; Anal spines: 1; Anal soft rays: 19 - 24Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameChilatherina axelrodiFamilyMelanotaeniidae (Rainbowfishes, blue eyes)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)Maximum length7.0EnvironmentFreshwater;; pH range: 7.0 - ?; dH range: 15 - ? pelagicClimateTropicalDistributionOceania: Known only from the Yungkiri Stream in Papua New Guinea.Conservation status (IUCN)Lower Risk: least concern (LR/lc)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