Elasmobranchii (sharks and rays) > Squaliformes
(Bramble, sleeper and dogfish sharks) > Somniosidae
Etymology: Centroscymnus: Greek, kentron = sting + Greek, skymnos, -ou = pup, puppy (Ref. 45335). More on author: Garman.
Environment / Climate / Range
Marine; bathydemersal; depth range 100 - 1500 m (Ref. 26346). Deep-water; 35°N - 41°S, 82°W - 177°W
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 100 - 104 cm
Max length : 121 cm TL male/unsexed; (Ref. 26346)
soft rays: 0. Dark brown or black in color, dorsal fins with extreme tips of fin spines protruding from the fins, moderately long snout, lanceolate upper teeth and bladelike lower teeth with short, oblique cusps, fairly stocky body that does not taper abruptly from pectoral region, large lateral trunk denticles with mostly smooth, circular, cuspidate and acuspidate crowns in adults and subadults (Ref. 247).
Atlantic, Pacific and Indian oceans.
Found on upper continental slopes, on or near the bottom (Ref. 247). Feeds on fish and cephalopods (Ref. 6871). Ovoviviparous (Ref. 205), with 16- 28 young born at 27-30 cm (Ref. 26346). Caught in trawls or longlines set at depths greater than 400 m (Ref. 55584). Flesh is high in mercury (Ref. 6871). Utilized as fishmeal and source of squalene (liver oil) (Ref. 6871). Maximum depth from Ref. 55584.
Ovoviviparous (Ref. 6871). 16- 28 young born at 27-30 cm (Ref. 26346). Distinct pairing with embrace (Ref. 205).
Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome: FAO. (Ref. 247)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
Poisonous to eat (Ref. 6871)
Fisheries: minor commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5313 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00174 - 0.00869), b=3.17 (2.97 - 3.37), based on LWR estimates for species & Family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 4.5 ±0.62 se; Based on food items.
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (Fec=16-28).
Vulnerability (Ref. 59153
): High vulnerability (64 of 100) .