Viper dogfish
Encyclopedia
The viper dogfish, Trigonognathus kabeyai, is a dogfish
, the only species in the genus Trigonognathus, found off Wakayama and Tokushima, Japan
, in the northwest Pacific Ocean
at depths of between 330 and 360 m. Its maximum length is 47 cm.
Viper dogfish are ovoviviparous
.
Squaliformes
Squaliformes is an order of sharks that includes about 97 species in seven families.Members of the order have two dorsal fins, which usually possess spines, no anal fin or nictitating membrane, and five gill slits. In most other respects, however, they are quite variable in form and size...
, the only species in the genus Trigonognathus, found off Wakayama and Tokushima, Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...
, in the northwest Pacific Ocean
Pacific Ocean
The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...
at depths of between 330 and 360 m. Its maximum length is 47 cm.
Viper dogfish are ovoviviparous
Ovoviviparity
Ovoviviparity, ovovivipary, or ovivipary, is a mode of reproduction in animals in which embryos develop inside eggs that are retained within the mother's body until they are ready to hatch...
.