What do walleye mainly eat?
Fish — and across a huge share of the range, one fish above all: yellow perch. Perch are abundant, they school predictably along structure, and they see poorly in low light exactly when the walleye sees best, so the walleye's whole crepuscular lifestyle functions as a perch-hunting machine. Around that core the menu flexes with the water: spottail and emerald shiners and other slim soft-rayed minnows nearly everywhere, cisco and smelt in deep cold lakes, shad in reservoirs, gobies in the Great Lakes, plus leeches, crayfish, and insect larvae in season. For lure and bait choice the perch-first rule quietly explains a century of walleye tackle: perch patterns, gold, and olive-and-orange earn their keep because they are, most places, what dinner looks like.
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