Knifetooth dogfish (Scymnodon ringens)

Scientific name: Scymnodon ringens Barbosa du Bocage & de Brito Capello, 1864

Knifetooth dogfish (Scymnodon ringens)

The Knifetooth dogfish (Scymnodon ringens) is a marine fish of the family Somniosidae. Native range: Eastern Atlantic, along the slope from Scotland to Spain, Portugal, Senegal. Southwest Pacific: New Zealand.

Biology

Anal spines: 0; Anal soft rays: 0. Black in color; small dorsal fin spines; short snout; small lanceolate teeth without cusplets in upper jaw and huge high, knife-cusped cutting teeth in lower jaw; mouth very wide and broadly arched; caudal fin with weak subterminal notch and no lower lobe.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Scymnodon ringens
Family
Somniosidae (Sleeper sharks)
Order
Squaliformes (Bramble, Sleeper and Dogfish sharks)
Class
Elasmobranchii (Sharks and Rays)
Maximum length
110
Depth range
200–1600 m (656–5249 ft)
Environment
Marine; bathypelagic; depth range 200 - 1600 m, usually 550 - 1450 m
Climate
Deep-water
Distribution
Eastern Atlantic: along the slope from Scotland to Spain, Portugal, Senegal. Southwest Pacific: New Zealand.
Conservation status (IUCN)
Data deficient (DD)
Threat to humans
Traumatogenic
Uses
Fisheries: minor commercial
Resilience
Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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