HomeFish encyclopediaRay-finned fishesPerch-like fishSea basses: groupers and fairy bassletsWestern wirrah Western wirrah (Acanthistius serratus) Scientific name: Acanthistius serratus Cuvier, 1828 The Western wirrah (Acanthistius serratus) is a marine fish of the family Serranidae. Native range: Eastern Indian Ocean, Endemic to southern Australia (Western Australia and South Australia). BiologyOccurs inshore. Benthic. Neither opercular spine nor anterolateral glandular grooves with venom gland is present.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAcanthistius serratusFamilySerranidae (Sea basses: groupers and fairy basslets)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length50.0EnvironmentMarine; reef-associated; non-migratoryClimateTemperateDistributionEastern Indian Ocean: Endemic to southern Australia (Western Australia and South Australia).Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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