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Whitefish Return to Spawn in Few Wisconsin Rivers

Created: 11/27/2013 9:54 AM WDIO.com

MARINETTE, Wis. (AP) - Wisconsin wildlife officials say Lake Michigan whitefish are turning up in rivers where they haven't been seen in a century.

Whitefish rebounded on Lake Michigan and Green Bay in the 1980s. But until recently, they had not been seen on inland waters.

The Milwaukee Journal Sentinel reports the reason for the fish's migration is unclear. It could be a sign of improving water quality. Or, the population in Green Bay may have grown enough that young fish are being pushed out of traditional spawning areas.

Scientists say it does not appear whitefish are leaving Lake Michigan to spawn in tributaries of Wisconsin rivers. The migration seems to be coming only from Green Bay.

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Information from: Milwaukee Journal Sentinel

(Copyright 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)

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