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Chilean jack mackerel
The Chilean jack mackerel (''Trachurus murphyi'') sometimes called the Inca scad, is a species of jack mackerel in the genus ''Trachurus'' of the family Carangidae. Since the 1970s, it has become one of the world's more important commercial fish species.〔 High volumes have been harvested, but the fishery may now be in danger of collapsing.〔〔
==Description==
Chilean jack mackerels are commonly long, though they can grow to . They have elongated and laterally compressed bodies. The head is large with well-developed transparent protective membranes (the adipose eyelid) covering the eyes. The mouth is also large, with the rear edge of the lower jaw aligning with the front edge of the eyes. It possesses small teeth. Each opercle of the gill covers has a distinct notch on its rear edge. The second dorsal fin is much longer than the first. The pectoral fins are long and pointed. The origin of the pelvic fins is below the bottom point of attachment of the pectorals. The anal fin is also long, but shorter than the second dorsal fin. At its front are two strong spines. The upper parts of the body are metallic blue in color, while the bottom surfaces are a silvery white.〔〔
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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