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One bluegill in the Chicago River regularly makes an 8.7-mile trek in a period of about 18 hours.
“He’s done it five times,” said Austin Happel, research biologist at the John G. Shedd Aquarium, who is leading a multiagency study that is tracking species in the Illinois river. “It’s really interesting to see such a little fish make such a huge journey many times, back and forth, while other bluegills in various parts of the waterway are basically staying put.”

The post Tracking in Chicago River offers interesting look at fish movement appeared first on Outdoor News.

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