Fish of the St. Croix: Past, present and future

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The types of fish inhabiting the St. Croix watershed have evolved over the years, and will continue to change for decades to come. The St. Croix River Association is presenting a signature speakers series event to learn more about one of the most diverse fish populations in the upper Midwest.

Dr. John Lyons, the curator of fish at the University of Wisconsin Zoological Museum in Madison, will speak 6-8 p.m. Thursday, April 12, at the River Falls Public Library about how climate and other changes are affecting fish in the watershed.

"The lakes and rivers of the St. Croix Watershed have experienced major transformations over the last 200 years," Lyons said. "The future of the watershed is unclear. Ongoing rehabilitation efforts continue to improve fish populations and their habitats, but urban sprawl, non-native aquatic invasive species and climate change threaten to reverse these gains."