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Ask a Fisheries Biologist: Lateral lines help fish capture prey when visibility is low

Wisconsin DNR Fish Biologist Max Wolter.

If you look closely at the side of most freshwater fish, you will see one of their most unique sensory systems, the lateral line. This appears visually as a faint row running along the fish. Many anglers might have heard of the lateral line and its role in helping fish capture prey even when visibility is low, but exactly how does it work?

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