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On how fish perceive the direction and strength of current of water?

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Lateral line that is in the skin, under the scales (if scales are available).\r\n\r\PU different fish it differently located. Someone, as the name suggests - in the form of a narrow strip along the body, someone in the form of a network throughout the body (e.g., lamprey).\r\n\r\PU most fish, it is clearly expressed and well marked.
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