Watching cisco for clues to fishery health

MADISON - Scientists in Wisconsin and Minnesota are studying a little-known fish whose disappearance could mean smaller musky, pike and walleye in the states' inland lakes.

The Wisconsin Department of Natural Resources is three years into a long-term study of the cisco, or lake herring. Cisco are slender white fish that need cold, clean water to survive.

Full story: WJFW

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