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DNR question of the week: Muskellunge

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DNR question of the week: Muskellunge
Brainerd MN 506 James St. / PO Box 974 56401

Q: How old do muskie get, and how long does it take to grow a 50 incher?

A: The oldest muskellunge I have aged was 22 years, and muskellunge in Canadian waters have been aged up to 30 years old.

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In both cases, ages were assessed using the cleithrum, a calcified structure that requires lethal sampling and is collected from harvested fish anglers bring into taxidermy shops.

Traditional aging methods used scales because they were easy to sample and fish didn’t have to be sacrificed. Various studies have since found the scale aging method underestimates age, particularly for larger fish.

Growth and ultimate size can vary among bodies of water, depending on factors such as lake productivity, forage and genetics. Depending on the body of water, muskellunge in Minnesota could take 13 to 21 years to reach 50 inches.

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Jerry Younk, DNR fisheries research biologist

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