DNR sampling shows strong fish populations in Illinois’ Rock River
According to DNR District Fisheries Biologist Rob Hilsabeck, a three-year effort to document population levels and size structures of fish in the Rock has found strong showings not only of walleyes, but of smallmouth bass and channel catfish, too. Shovelnose sturgeons are harder to survey and monitor, but indications are that they are healthy and populous.
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