HomeFish encyclopediaRay-finned fishesSilversidesRainbowfishes, blue eyesDesert rainbowfish Desert rainbowfish (Melanotaenia splendida tatei) Scientific name: Melanotaenia splendida tatei Zietz, 1896 The Desert rainbowfish (Melanotaenia splendida tatei) is a freshwater fish of the family Melanotaeniidae. In the aquarium it needs water at 20–30°C (68–86°F). Native range: Oceania, Northern Territory, Queensland and South Australia. Desert rainbowfish care at a glanceTemperature20–30°C (68–86°F) Species factsScientific nameMelanotaenia splendida tateiFamilyMelanotaeniidae (Rainbowfishes, blue eyes)OrderAtheriniformes (Silversides)ClassActinopterygii (Ray-finned fishes)Maximum length10.0EnvironmentFreshwater;; pH range: 6.0 - 8.0; dH range: ? - 30 benthopelagicClimateTropicalDistributionOceania: Northern Territory, Queensland and South AustraliaConservation 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