What Is the Difference Between a Walleye and a Pickerel?

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One difference between a walleye and a pickerel is that a walleye is a member of the perch family, and a pickerel is a type of pike. The walleye is also considerably larger than a pickerel. The walleye can grow to nearly 3 1/2 feet long and weigh up to 24 pounds, while the American pickerel can grow to 16 inches long and weigh about 2 1/4 pounds.