The mosaic gulper shark (''Centrophorus tessellatus'') is a small rare deepwater dogfish, found in the

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...

around

Honshū , historically called , is the largest and most populous island of Japan. It is located south of Hokkaidō across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyūshū across the Kanmon Straits. The island separa ...

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

and the

Hawaii Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only stat ...

an Islands at depths between 260 and 728 m. It is one of 13 described species in the genus ''

Centrophorus ''Centrophorus'' is a genus of squaliform sharks. These deep-water sharks, found in temperate and tropical oceans throughout the world, are characterized by grey or brown bodies, large green eyes, and spines on both dorsal fins. These spines gi ...

''. The mosaic gulper shark has no

anal fin Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as se ...

, two

dorsal fin A dorsal fin is a fin located on the back of most marine and freshwater vertebrates within various taxa of the animal kingdom. Many species of animals possessing dorsal fins are not particularly closely related to each other, though through conv ...

s with large spines (the second dorsal is relatively high, almost as high as the first), large eyes, angular extended free tips on the

pectoral fin Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as ...

s, and a moderately notched

caudal fin Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as se ...

. It has a maximum length of . The mosaic gulper shark features a moderately long, parabolic snout with a width that is slightly greater than that of its mouth. Its mouth includes sets of sharp, unicuspid teeth in both its upper and lower jaws, with the lower sets being larger than the top. The mosaic gulper shark is ovoviviparous and produces liters of 1 to 2 pups. Being found at depths between 260 and 728 m, the mosaic gulper shark is rare enough that it has no significance to fisheries, contrary to others of the genus ''Cemtrophorus.'' The mosaic gulper shark's conservation status is currently classified as endangered. The mosaic gulper shark seems to be harmless to humans.

References

* * FAO Species Catalogue Volume 4 Parts 1 and 2 Sharks of the World * * mosaic gulper shark Fish of Japan mosaic gulper shark {{Shark-stub