New study shows fish spawning in Chicago River hits a high point

Crappies, bluegills and bass appear to be benefiting greatly from improved habitat and conditions in what was once considered the most polluted body of water in Illinois.
But those popular species aren’t alone. Austin Happel, a research biologist at Shedd Aquarium and author of a new study that looks at fish currently reproducing in the Chicago River, reported that at least two dozen species have successfully spawned in the urban waterway.

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