HomeFish encyclopediaSharks and RaysGround sharksCat sharksFlathead catshark Flathead catshark (Apristurus macrorhynchus) Scientific name: Apristurus macrorhynchus Tanaka, 1909 The Flathead catshark (Apristurus macrorhynchus) is a marine fish of the family Scyliorhinidae. Native range: Northwest Pacific, southeast Honshu, Japan and Taiwan. BiologyA little-known deepwater bottom shark. Oviparous with one egg per oviduct.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameApristurus macrorhynchusFamilyScyliorhinidae (Cat sharks)OrderCarcharhiniformes (Ground sharks)ClassElasmobranchii (Sharks and Rays)Maximum length66EnvironmentMarine; bathydemersalClimateDeep-waterDistributionNorthwest Pacific: southeast Honshu, Japan and Taiwan.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessUsesFisheries: of no interestResilienceVery Low, minimum population doubling time more than 14 years (Fec=2) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026