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The viper dogfish or viper shark (Trigonognathus kabeyai) is a rare species of dogfish shark in the family Etmopteridae, and the only extant member of its genus.It has been found in the Pacific Ocean off southern Japan, the Bonin Islands, Pacific Ocean off northern Taitung County and the Northwestern Hawaiian Islands.
Dogfish sharks use their strong jaw and sharp teeth to consume their prey. The spiny dogfish has broken several records in the areas of migration and gestation. This shark tends to be a highly migratory species: one shark was recorded as travelling 8,000 km (5,000 miles) after being tagged in Washington state, United States, and found again ...
Dogfish sharks: 3 31 Dogfish sharks have two dorsal fins, each with smooth spines, but no anal fin. Their skin is generally rough to the touch. [18] These sharks are characterized by teeth in upper and lower jaws similar in size; caudal peduncle with lateral keels; upper precaudal pit usually present; and a caudal fin without a subterminal notch.
Chauliodus species are recognized by their large, fang-like teeth. They are so long that they would pierce the brain of the fish if misaligned. [3]One species of viperfish, C. sloani, have a sampled standard length of 64.0 to 260.0 mm, with a mean SL of 120.3mm.
Viper dogfish; Japanese roughshark; Reptiles. Habu, four different species of venomous snake that exist in certain islands including Okinawa, the Sakishima ...
Etmopterus sheikoi (Dolganov, 1986) (rasp-tooth dogfish) [15] Etmopterus spinax (Linnaeus, 1758) (velvet-belly lanternshark) Etmopterus splendidus Ka. Yano, 1988 (splendid lanternshark) Etmopterus unicolor (Engelhardt, 1912) (bristled lanternshark) Etmopterus viator Straube, 2011 (traveller lanternshark) [16]
Squalus is a genus of dogfish sharks in the family Squalidae.Commonly known as spurdogs, these sharks are characterized by smooth dorsal fin spines, teeth in upper and lower jaws similar in size, caudal peduncle with lateral keels; upper precaudal pit usually present, and caudal fin without subterminal notch.
The Centrophoridae are a family of squaliform sharks.The family contains just two genera and about 15 species.They are sometimes called gulper sharks, but this is also the name of a specific species in the family, Centrophorus granulosus.