Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Squaliformes (Bramble, sleeper and dogfish sharks) > Somniosidae (Sleeper sharks)

Environment / Climate / Range Ecology

Marine; benthopelagic; depth range 0 - 2200 m (Ref. 6871), usually 400 - 900 m (Ref. 55584). Deep-water; 64°N - 48°S

Length at first maturity / Size / Weight / Age

Maturity: L_m ?, range 59 - ? cm
Max length : 84.0 cm TL male/unsexed; (Ref. 6871)

Short description Morphology | Morphometrics

Dorsal spines (total): 2; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 0. Black in color, small dorsal fin spines, moderately long snout, small lanceolate teeth without cusplets in upper jaw and large high, knife-cusped cutting teeth in lower jaw, mouth moderately wide and nearly transverse, caudal fin with strong subterminal notch and short lower lobe (Ref. 247).

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions | Faunafri

Western Indian Ocean: off Natal, South Africa (Ref. 5578). Eastern Pacific: Hawaiian Islands and Chile (Ref. 58302). Western Pacific: Japan, South China Sea, New Zealand, and Australia. Eastern Atlantic: Iceland to Senegal; off Namibia (Ref. 5578). Western Atlantic: Gulf of Mexico, Suriname, and southern Brazil to Uruguay (Ref. 58839).

Demersal or pelagic near continental slopes and seamounts in depths of 550-2,000 m (Ref. 6871, 58302). Also found from the surface to 580 m over deep water (Ref. 26346). Ovoviviparous (Ref. 205). Used dried and salted for human consumption and for fishmeal (Ref. 6871). Caught rarely by longline fisheries operating in deepwater; also caught, but rarely landed, by pelagic tuna longline fisheries (Ref.58048).

Main reference Upload your references | References | Coordinator | Collaborators

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.

IUCN Red List Status (Ref. 90363)

Data deficient (DD)

Threat to humans

Harmless

Human uses

Fisheries: minor commercial

FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805): PD₅₀ = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00484 (-0.19250 - 0.20217), b=3.13 (3.03 - 3.23), based on LWR estimates for this family-BS (Ref. 93245).

Trophic Level (Ref. 69278): 4.0 ±0.5 se; Based on size and trophs of closest relatives

Resilience (Ref. 69278): Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100).

Vulnerability (Ref. 59153): Moderate to high vulnerability (51 of 100) .

Price category (Ref. 80766): Unknown.

Zameus squamulosus (Günther, 1877)