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, preferred ?; 68°N - 56°S, 180°W - 180°E

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

Atlantic, Indian and Pacific tropical oceans.

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).

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).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Distinct pairing with embrace (Ref. 205). Presumambly viviparous, with yolk-sac dependancy (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. (Ref. 247)

IUCN Red List Status (Ref. 115185)

Data deficient (DD)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: minor commercial

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Internet sources

Estimates of some properties based on models

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

Bayesian length-weight: a=0.00490 (0.00200 - 0.01197), b=3.13 (2.92 - 3.34), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic Level (Ref. 69278): 4.0 ±0.60 se; Based on food items.

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)