HomeFish encyclopediaRay-finned fishesPerch-like fishSea basses: groupers and fairy bassletsAllen's perchlet Allen's perchlet (Plectranthias alleni) Scientific name: Plectranthias alleni Randall, 1980 The Allen's perchlet (Plectranthias alleni) is a marine fish of the family Serranidae. Native range: Eastern Indian Ocean, Endemic to Western Australia. Species factsScientific namePlectranthias alleniFamilySerranidae (Sea basses: groupers and fairy basslets)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length6.3Depth range62–256 m (203–840 ft)EnvironmentMarine; demersal; depth range 62 - 256 mClimateSubtropicalDistributionEastern Indian Ocean: Endemic to Western Australia.Conservation status (IUCN)Not EvaluatedThreat 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