HomeFish encyclopediaRay-finned fishesSawbelliesSlimeheadsGiant sawbelly Giant sawbelly (Hoplostethus gigas) Scientific name: Hoplostethus gigas McCulloch, 1914 The Giant sawbelly (Hoplostethus gigas) is a marine fish of the family Trachichthyidae. Native range: Eastern Indian Ocean, western and southern coasts of Australia. Southwest Pacific: New Zealand. Species factsScientific nameHoplostethus gigasFamilyTrachichthyidae (Slimeheads)OrderBeryciformes (Sawbellies)ClassActinopterygii (Ray-finned fishes)Maximum length52.0Depth range237–311 m (778–1020 ft)EnvironmentMarine; bathydemersal; depth range 237 - 311 mClimateDeep-waterDistributionEastern Indian Ocean: western and southern coasts of Australia. Southwest Pacific: New Zealand.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceVery Low, minimum population doubling time more than 14 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