HomeFish encyclopediaRay-finned fishesSilversidesRainbowfishes, blue eyesStrickland rainbowfish Strickland rainbowfish (Melanotaenia iris) Scientific name: Melanotaenia iris Allen, 1987 The Strickland rainbowfish (Melanotaenia iris) is a freshwater fish of the family Melanotaeniidae. Native range: Oceania, known only from 5 specimens collected from the Logatyu River, a mountain tributary of the Strickland River near Wankipe, Papua New Guinea. BiologyDorsal spines (total): 5 - 6; Dorsal soft rays (total): 17-19; Anal spines: 1; Anal soft rays: 21 - 24Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMelanotaenia irisFamilyMelanotaeniidae (Rainbowfishes, blue eyes)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)Maximum length10.0EnvironmentFreshwater; benthopelagicClimateTropicalDistributionOceania: known only from 5 specimens collected from the Logatyu River, a mountain tributary of the Strickland River near Wankipe, 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