Cisco (or lake herring). Coregonus artedii.
by Bob Gross, Times Herald
When the Michigan Department of Natural Resources announced a three-year trial to allow a commercial fishery to pursue whitefish in southern Lake Huron, recreational anglers took to social media to express their outrage.
http://www.thetimesherald.com/story/news/local/2015/06/07/commercial-fishing-trial-worries-lake-huron-anglers/28653965/