HomeFish encyclopediaSharks and RaysGround sharksCat sharksSpotless catshark Spotless catshark (Bythaelurus immaculatus) Scientific name: Bythaelurus immaculatus Chu & Meng, 1982 The Spotless catshark (Bythaelurus immaculatus) is a marine fish of the family Scyliorhinidae. BiologyFound on the continental slope. Just recently described. Not utilized at present.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameBythaelurus immaculatusFamilyScyliorhinidae (Cat sharks)OrderCarcharhiniformes (Ground sharks)ClassElasmobranchii (Sharks and Rays)Maximum length71.0Depth range534–1020 m (1752–3346 ft)EnvironmentMarine; bathydemersal; depth range 534 - 1020 mClimateDeep-waterDistributionNorthwest Pacific: only known from the South China Sea at about 380 to 400 km east of Hainan Island Occurrence in the Western Central Pacific uncertain, marginal in the South China Sea. For unavailability of material to be examined, the generic placement and recognition of this species is provisional.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessUsesFisheries: of no interestResilienceLow, minimum population doubling time 4.5 - 14 years (Fec assumed to be SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026