HomeFish encyclopediaRay-finned fishesPerch-like fishRoundheadsAlison's blue devil Alison's blue devil (Paraplesiops alisonae) Scientific name: Paraplesiops alisonae Hoese & Kuiter, 1984 The Alison's blue devil (Paraplesiops alisonae) is a brackish-water fish of the family Plesiopidae. In the aquarium it needs water at 16–20°C (61–68°F). Native range: Southwest Pacific, endemic to southern Australia and Tasmania. Alison's blue devil care at a glanceTemperature16–20°C (61–68°F) BiologyAdults are benthic species which occur inshore. Eggs are guarded by the male parent.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameParaplesiops alisonaeFamilyPlesiopidae (Roundheads)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length15.0EnvironmentMarine; brackish; reef-associated, usually 5 - 20 mClimateTemperateDistributionSouthwest Pacific: endemic to southern Australia and Tasmania.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercialResilienceHigh, 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