I've never heard of any pickerel being in the Grand. You can debate the pickerel/walleye thing forever. They had a good article in Outdoor Canada on the difference of grass, chain, and an other type of pickerel. The chain pickerel is a member of the pike family. When you see a chain pickerel, you'll know why. It looks like a pike except for the markings. What I don't understand is why those pickerel resemble a pike but walleye are referred to sometimes as yellow pickerel. A walleye doesn't resemble pike/chain pickerel at all. So that's confusing. I've heard walleye also called pike/perch. But anyway, here's a pic of a chain pickerel from New Brunswick.