HomeFish encyclopediaRay-finned fishesScorpionfishes and FlatheadsFlatheadsSmallknob flathead Smallknob flathead (Thysanophrys papillaris) Scientific name: Thysanophrys papillaris Imamura & Knapp, 1999 The Smallknob flathead (Thysanophrys papillaris) is a marine fish of the family Platycephalidae. Native range: Indo-West Pacific, Andaman Sea and off northern Australia (Timor and Arafura seas). BiologyFound on the continental shelf. Benthic.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameThysanophrys papillarisFamilyPlatycephalidae (Flatheads)OrderScorpaeniformes (Scorpionfishes and Flatheads)ClassActinopterygii (Ray-finned fishes)Maximum length12.1Depth range98 m (322 ft)EnvironmentMarine; demersal; depth range 98 - 98 mClimateTropicalDistributionIndo-West Pacific: Andaman Sea and off northern Australia (Timor and Arafura seas).Conservation status (IUCN)Not EvaluatedThreat 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