Looks like it is grass carp. My understanding is that the fish being captured are predominately sterile (triploid?) which I'm guessing means they originated in a hatchery somewhere. Currently, triploid grass carp are legal for stocking in Illinois with a permit. I would not be surprised to see them put on the prohibited species list now along with already prohibited tilapia.

http://www.chicagotribune.com/news/local/breaking/ct-grass-carp-great-lakes-20170127-story.html

Last edited by Bill D.; 01/28/17 10:03 AM.
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