HomeFish encyclopediaRay-finned fishesScorpionfishes and FlatheadsFlatheadsDeep-water flathead Deep-water flathead (Platycephalus conatus) Scientific name: Platycephalus conatus Waite & McCulloch, 1915 The Deep-water flathead (Platycephalus conatus) is a marine fish of the family Platycephalidae. BiologyOccurs on the continental shelf and upper slope. Feeds primarily on fish, crustaceans and squid. Probably forms aggregations by sex. Sold as fresh, chilled, or frozen fillets in the domestic market.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePlatycephalus conatusFamilyPlatycephalidae (Flatheads)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)Maximum length70.0Depth range70–490 m (230–1608 ft)EnvironmentMarine; demersal; depth range 70 - 490 mClimateSubtropicalDistributionIndo-Pacific: endemic to the southern waters of Australia, from Marrawah in northwestern Tasmania to latitude 27?S off Western Australia. This species has been confused with Platycephalus speculator until recently.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceLow, minimum population doubling time 4.5 - 14 years (tm=4-6; tmax=20) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026