The
longsnout dogfish Deania quadrispinosum is a little known deepwater
dogfishDogfish can have many meanings, but usually refers to a type of shark:* A shark belonging to the order Squaliformes, or to one of its constituent families:* Family Centrophoridae * Family Dalatiidae...
, found in the Atlantic and
Indian OceanThe Indian Ocean is the third largest of the world's oceanic divisions, covering about 20% of the water on the Earth's surface. It is bounded on the north by South Asia ; on the west by Africa; on the east by Indochina, the Sunda Islands, and Australia; and on the south by the Southern Ocean...
s from
NamibiaNamibia, officially the Republic of Namibia , is a country in Southern Africa whose western border is the Atlantic Ocean. It shares borders with Angola and Zambia to the north, Botswana and Zimbabwe to the east, and South Africa to the south and east...
to
MozambiqueMozambique, officially the Republic of Mozambique , is a country in southeastern Africa bordered by the Indian Ocean to the east, Tanzania to the north, Malawi and Zambia to the northwest, Zimbabwe to the west and Swaziland and South Africa to the southwest. It was explored by Vasco da Gama in 1498...
and in the south Pacific off southern
AustraliaAustralia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the continental mainland , the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans...
.
Longsnout dogfish have an extremely long angular snout, no anal fin,
dorsal finA dorsal fin is a fin located on the backs of some fish, whales, dolphins, and porpoises, as well as the ichthyosaurs. Depending on the species, an animal can have up to three of them. Its main purpose is to stabilize the animal against rolling and assist in sudden turns...
s of similar size with the first placed high on the back and the second having a longer rear free tip, and pitchfork shaped dermal denticles.
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The
longsnout dogfish Deania quadrispinosum is a little known deepwater
dogfishDogfish can have many meanings, but usually refers to a type of shark:* A shark belonging to the order Squaliformes, or to one of its constituent families:* Family Centrophoridae * Family Dalatiidae...
, found in the Atlantic and
Indian OceanThe Indian Ocean is the third largest of the world's oceanic divisions, covering about 20% of the water on the Earth's surface. It is bounded on the north by South Asia ; on the west by Africa; on the east by Indochina, the Sunda Islands, and Australia; and on the south by the Southern Ocean...
s from
NamibiaNamibia, officially the Republic of Namibia , is a country in Southern Africa whose western border is the Atlantic Ocean. It shares borders with Angola and Zambia to the north, Botswana and Zimbabwe to the east, and South Africa to the south and east...
to
MozambiqueMozambique, officially the Republic of Mozambique , is a country in southeastern Africa bordered by the Indian Ocean to the east, Tanzania to the north, Malawi and Zambia to the northwest, Zimbabwe to the west and Swaziland and South Africa to the southwest. It was explored by Vasco da Gama in 1498...
and in the south Pacific off southern
AustraliaAustralia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the continental mainland , the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans...
.
Longsnout dogfish have an extremely long angular snout, no anal fin,
dorsal finA dorsal fin is a fin located on the backs of some fish, whales, dolphins, and porpoises, as well as the ichthyosaurs. Depending on the species, an animal can have up to three of them. Its main purpose is to stabilize the animal against rolling and assist in sudden turns...
s of similar size with the first placed high on the back and the second having a longer rear free tip, and pitchfork shaped dermal denticles. It is dark brown and grows to about 114 cm.
Reproduction is ovoviviparous.
This shark lives at depths of between 150 and 732 m. It eats bony fish.