HomeFish encyclopediaSharks and RaysGround sharksCat sharksCircle-blotch pygmy swell shark Circle-blotch pygmy swell shark (Cephaloscyllium circulopullum) Scientific name: Cephaloscyllium circulopullum Yano, Ahmad & Gambang, 2005 The Circle-blotch pygmy swell shark (Cephaloscyllium circulopullum) is a marine fish of the family Scyliorhinidae. Native range: Western Pacific, Malaysia and Brunei Darussalam. BiologySpecimens were collected with bottom trawl nets.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCephaloscyllium circulopullumFamilyScyliorhinidae (Cat sharks)OrderCarcharhiniformes (Ground sharks)ClassElasmobranchii (Sharks and Rays)Maximum length37.8Depth range118–165 m (387–541 ft)EnvironmentMarine; benthopelagic; depth range 118 - 165 mClimateTropicalDistributionWestern Pacific: Malaysia and Brunei Darussalam.Conservation status (IUCN)Data deficient (DD)Threat 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