HomeFish encyclopediaSharks and RaysGround sharksCat sharksBlackgill catshark Blackgill catshark (Parmaturus melanobranchus) Scientific name: Parmaturus melanobranchus Chan, 1966 The Blackgill catshark (Parmaturus melanobranchus) is a marine fish of the family Scyliorhinidae. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 0. Light brown with distal parts and anterior margins of fins, snout, nostrils, and gills blackish brown in young, possibly uniform blackish brown in adults.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameParmaturus melanobranchusFamilyScyliorhinidae (Cat sharks)OrderCarcharhiniformes (Ground sharks)ClassElasmobranchii (Sharks and Rays)Maximum length85Depth range540–810 m (1772–2657 ft)EnvironmentMarine; bathydemersal; depth range 540 - 810 mClimateDeep-waterDistributionNorthwest Pacific: known from only 3 specimens taken in the South China Sea. Collected less than a degree north of the northwestern boundary of the Western Central Pacific.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