HomeFish encyclopediaRay-finned fishesPerch-like fishMarblefishesWestern seacarp Western seacarp (Aplodactylus westralis) Scientific name: Aplodactylus westralis Russell, 1987 The Western seacarp (Aplodactylus westralis) is a marine fish of the family Aplodactylidae. Native range: Eastern Indian Ocean, Rottnest Island to Twilight Cove, Great Australian Bight in Western Australia; Stenhouse Bay, York Peninsula, South Australia. BiologyOccurs inshore. Common in weedy reef areas.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAplodactylus westralisFamilyAplodactylidae (Marblefishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length34.7Depth range20 m (66 ft)EnvironmentMarine; reef-associated; depth range ? - 20 mClimateSubtropicalDistributionEastern Indian Ocean: Rottnest Island to Twilight Cove, Great Australian Bight in Western Australia; Stenhouse Bay, York Peninsula, South Australia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026