HomeFish encyclopediaSharks and RaysGround sharksFalse catsharksFalse catshark False catshark (Pseudotriakis microdon) Scientific name: Pseudotriakis microdon de Brito Capello, 1868 The False catshark (Pseudotriakis microdon) is a marine fish of the family Pseudotriakidae. BiologyFound on the continental and insular slopes, occasionally wandering onto continental shelves. Inactive and sluggish. Probably eats bony fishes, elasmobranchs and invertebrates. Ovoviviparous, embryos feeding on yolk sac and other ova produced by the mother, uterine milk is consumed additionally. Pups number 2 to 4 in a litter, size at birth between 70 and 140 cm TL. Caught very rarely by deepwater demersal longline fisheries in some areas. Utilized for its fins (limited value), meat and cartilage.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePseudotriakis microdonFamilyPseudotriakidae (False catsharks)OrderCarcharhiniformes (Ground sharks)ClassElasmobranchii (Sharks and Rays)Maximum length269Depth range173–1890 m (568–6201 ft)EnvironmentMarine; bathydemersal; depth range 173 - 1890 mClimateDeep-waterDistributionWestern Atlantic: New York and New Jersey, USA. Reported from Cuba; including Brazil. Northeast Atlantic: Atlantic slope off Iceland, France, Portugal, Madeira, Azores, Senegal, and Cape Verde. Indian Ocean: Aldabra Island group and Western Australia. Pacific Ocean: Japan, Taiwan, New Zealand, and Hawaii.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessUsesFisheries: subsistence fisheriesResilienceVery Low, minimum population doubling time more than 14 years (K=0.17; 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