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Tagging, tracking fish helps biologists understand fish movement in Upper Mississippi River

USFWS Biologist Mark Fritts implants a telemetry transmitter in “Steve” a Silver Carp captured in the Upper Mississippi River. (Photo courtesy of USFWS)

Biologists at the U.S. Fish and Wildlife Conservation Office (FWCO) and Wisconsin partners rely on telemetry technology to help understand how fish move around in the Upper Mississippi River watershed. We can answer lots of important questions using these data like “How often do fish cross through dams?” or “Where do these fish spawn or spend their winters?”
Currently there are over 1,500 tagged fish swimming around in the Upper Mississippi River.

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