A tour boat on May 11, 2016, heads along the South Branch of the Chicago River adjacent to the 62-acre parcel of former railroad land to be developed just south of Roosevelt Road and west of Clark Street in Chicago. (Zbigniew Bzdak / Chicago Tribune)

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CHICAGO — Dozens of fish species make their home in the Chicago River.

Surprised?

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“People are stunned how many fish live in the river,” said Friends of the Chicago River director Margaret Frisbie. “They’re used to thinking about the river being polluted and the green dye on St. Patrick’s Day, which is not a vote of confidence for fish under the water.”

But under the water the fish are. And there are lots of them, from bass and carp, to salmon and sunfish. Finds within the past few years include the banded killifish and the spotted gar. The dozens of species in the river now is a huge jump from the five to seven that were found in the 1970s.

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