HomeFish encyclopediaRay-finned fishesPerch-like fishSea basses: groupers and fairy bassletsWestern orange perch Western orange perch (Lepidoperca filamenta) Scientific name: Lepidoperca filamenta Roberts, 1987 The Western orange perch (Lepidoperca filamenta) is a marine fish of the family Serranidae. Native range: Eastern Indian Ocean, southern Australia. BiologyDorsal spines (total): 10; Dorsal soft rays (total): 16-17; Anal spines: 3; Anal soft rays: 8. Caudal fin large, lunate; pectoral fins elongate, reaching well past origin of anal fin, middle rays longest.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameLepidoperca filamentaFamilySerranidae (Sea basses: groupers and fairy basslets)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length18.0Depth range128–220 m (420–722 ft)EnvironmentMarine; demersal; depth range 128 - 220 mClimateSubtropicalDistributionEastern Indian Ocean: southern Australia.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