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Catshark
Catsharks are ground sharks of the family Scyliorhinidae, with over 150 known species. Although they are generally known as ''catsharks'', many species are commonly called dogfish or gato. Catsharks are found in temperate and tropical seas worldwide, ranging from very shallow intertidal waters to depths of or more, depending on species.
==Description==
Catsharks may be distinguished by their elongated, cat-like eyes and two small dorsal fins set far back. Most species are fairly small, growing no longer than ; a few, such as the nursehound (''Scyliorhinus stellaris'') can reach in length. Most of the species have a patterned appearance, ranging from stripes to patches to spots. They feed on invertebrates and smaller fish. Some species are aplacental viviparous, but most lay eggs in tough egg cases with curly tendrils at each end, known as mermaid's purses.
The "swell sharks" of the genus ''Cephaloscyllium'' have the curious ability to fill their stomachs with water or air when threatened, increasing their girth by a factor of one to three.
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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