HomeFish encyclopediaRay-finned fishesPerch-like fishWrassesLittle rainbow wrasse Little rainbow wrasse (Dotalabrus alleni) Scientific name: Dotalabrus alleni Russell, 1988 The Little rainbow wrasse (Dotalabrus alleni) is a marine fish of the family Labridae. Native range: Eastern Indian Ocean, known only from southern Western Australia, from the Recherche Archipelago to Rottnest Island. Species factsScientific nameDotalabrus alleniFamilyLabridae (Wrasses)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length8.5Depth range1–15 m (3–49 ft)EnvironmentMarine; reef-associated; depth range 1 - 15 mClimateSubtropicalDistributionEastern Indian Ocean: known only from southern Western Australia, from the Recherche Archipelago to Rottnest Island.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (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