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The snakeheads are members of the freshwater perciform fish family Channidae, native to parts of Africa and Asia. These elongated, predatory fish are distinguished by their long dorsal fins, large mouths, and shiny teeth. They breathe air with gills, which allows them to migrate short distances over land. They have suprabranchial organs developing when they grow older,〔Pinter, H. (1986). ''Labyrinth Fish.'' Barron's Educational Series, Inc., ISBN 0-8120-5635-3.〕 which is a primitive form of a labyrinth organ. The two extant genera are ''Channa'' in Asia and ''Parachanna'' in Africa, consisting of about 35 species. They are valuable as a food source and have become notorious as an intentionally released invasive species. ==Description== The various species of snakeheads differ greatly in size. Dwarf snakeheads, such as ''Channa gachua'', grow to in length. Most other snakeheads reach between . Five species (''C. argus'', ''C. barca'', ''C. marulius'', ''C. micropeltes'' and ''C. striata'') can reach or more. Snakeheads are thrust-feeders that consume plankton, aquatic insects, and mollusks when small. As adults, they mostly feed on other fish (such as carp) or on frogs. In rare cases, small mammals such as rats are taken. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Snakehead (fish)」の詳細全文を読む スポンサード リンク
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