Crews pulled hundreds of young silver carp from an Illinois River pool just 80 miles from Lake Michigan; their size points to possible spawning farther north

Hundreds of young invasive silver carp were found in the Illinois River. This discovery suggests reproduction occurred farther upstream than previously documented. Scientists are now working to determine the origin and extent of these young fish. Efforts to prevent their spread to Lake Michigan are increasing in urgency. Construction on a barrier project has resumed after a temporary halt.
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