Do walleye eat crayfish and gobies?
Yes, opportunistically — and in the Great Lakes, more than opportunistically. Crayfish show up in walleye stomachs mostly in summer, mostly from fish grinding rocky structure, but they are a side dish; the walleye lacks the smallmouth's crayfish obsession. Round gobies are a different story: since their invasion, gobies have become a major forage item for Great Lakes walleye, thick on the same rock where walleye hunt, and local tactics have followed — dragging goby-colored plastics and blade baits tight to bottom now catches fish that classic minnow profiles miss. The general lesson travels: walleye diets track whatever the lake actually stocks the bottom with, so a quick look at local forage beats any universal bait list.
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