The largespine velvet dogfish (''Scymnodon macracanthus'') is a
shark
Sharks are a group of elasmobranch cartilaginous fish characterized by a ribless endoskeleton, dermal denticles, five to seven gill slits on each side, and pectoral fins that are not fused to the head. Modern sharks are classified within the ...
of the
family
Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...
Somniosidae, found on the lower
continental slope
A continental margin is the outer edge of continental crust abutting oceanic crust under coastal waters. It is one of the three major zones of the ocean floor, the other two being deep-ocean basins and mid-ocean ridges.
The continental margi ...
s between
latitude
In geography, latitude is a geographic coordinate system, geographic coordinate that specifies the north-south position of a point on the surface of the Earth or another celestial body. Latitude is given as an angle that ranges from −90° at t ...
s
50°S and
54°S in the southeast
Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five Borders of the oceans, oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is ...
from the
Straits of Magellan
The Strait of Magellan (), also called the Straits of Magellan, is a navigable sea route in southern Chile separating mainland South America to the north and the Tierra del Fuego archipelago to the south. Considered the most important natural ...
, and the southwest Pacific from
New Zealand
New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...
, at depths of between . Its length is up to . It was originally in the genus ''
Centroscymnus'' because of the shape of its dermal denticles and dorsal fin spines but some argued to put it in the genus ''Scymnodon'' because of its shape of dermal denticles. While some wanted to allocate these in ''Centroscymnus'' because of the shape of its lower teeth but later it was allocated to a distinct genus called ''Proscymnodon''.
Conservation status
The New Zealand
Department of Conservation has classified the largespine velvet dogfish as "Not Threatened" with the qualifier "Uncertain whether Threatened Overseas" under the
New Zealand Threat Classification System
The New Zealand Threat Classification System is used by the Department of Conservation to assess conservation priorities of species in New Zealand.
The system was developed because the IUCN Red List, a similar conservation status system, had s ...
.
References
Scymnodon
Taxa named by Charles Tate Regan
Fish described in 1906
{{Shark-stub