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Cloudy catshark
The cloudy catshark (''Scyliorhinus torazame'') is a common species of catshark, belonging to the family Scyliorhinidae. It is a bottom-dweller that inhabits rocky reefs in the northwestern Pacific Ocean, from the shore to a depth of . Growing up to long, this small, slim shark has a narrow head with a short blunt snout, no grooves between the nostrils and mouth, and furrows on the lower but not the upper jaw. It is also characterized by extremely rough skin and coloration consisting of a series of dark brown saddles along its back and tail, along with various darker and lighter spots in larger individuals.
The diet of the cloudy catshark consists of molluscs, crustaceans, and bony fishes. It is oviparous, with females laying encapsulated eggs two at a time in nursery areas. The claspers of the male bear numerous hooks that likely serve to facilitate copulation. This harmless shark can be readily maintained in captivity and is used as a model organism for biological research. It is caught incidentally, and generally discarded, by commercial fisheries. These activities do not appear to have negatively affected its population, leading it to be listed under Least Concern by the International Union for Conservation of Nature (IUCN).
==Taxonomy==
The original description of the cloudy catshark was published in 1908 by Shigeho Tanaka in the ''Journal of the Faculty of Science, University of Tokyo''. He gave it the specific epithet ''torazame'', which is its Japanese name (虎鮫, literally "tiger shark"), and assigned it to the genus ''Catulus''. The type specimen was a long adult male caught off Misaki, Kanagawa, Japan.〔 Subsequent authors have synonymized ''Catulus'' with ''Scyliorhinus''.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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