GREEN BAY, WI (WTAQ) - Lake Michigan whitefish are being found in Wisconsin's inland rivers for the first time in a century.
The whitefish population rebounded in the 1980's in Lake Michigan and the Bay of Green Bay -- but they had not been seen inland until just recently. It's not known why.
The Milwaukee Journal Sentinel said improved water quality might be a factor, or the population in Green Bay may have grown to the point in which young whitefish are being pushed out of normal spawning areas.
Scientists say the inland migration appears to be coming solely from the Bay of Green Bay -- and it does not appear that whitefish are leaving Lake Michigan at the moment.