The stocking effort comes after the Michigan Natural Resources Commission reversed a statewide ban on targeting Arctic grayling. It’s a milestone in a yearslong effort to return wild grayling to Michigan’s water, nearly a century after logging, overfishing and competition from stocked fish eradicated them in the state.
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Since 2019, the Department of Natural Resources has been raising Alaskan grayling in Michigan hatcheries, with plans to use their eggs to seed wild populations in Michigan rivers.
But the DNR raised more fish than necessary, an insurance policy against potential disease outbreaks in the Marquette State Fish Hatchery’s close quarters, said Jay Wesley, Lake Michigan basin coordinator for the DNR fisheries division.
Wesley said the oldest fish, now up to 15 inches in size, are “basically outgrowing the space.” Stocking the extras in U.P. lakes “is an opportunity to get people excited” about the larger reintroduction effort.
Known for their silvery-blue scales and large dorsal fin, Arctic grayling were once abundant in Michigan’s northern Lower Peninsula. But logging, overfishing, and competition from non-native trout took a toll, and the fish vanished from Michigan by 1936.
Wild populations remain in Canada, Alaska and Montana. The fish are aggressive biters and strong fighters when hooked, making them a popular sport fish.
Wesley said DNR staff have approval to stock the fish in lakes Penegor and Perrault in Houghton County. Three other U.P. lakes are under consideration.
The fishing opportunity will be catch-and-release, meaning anglers won’t be allowed to keep the fish. That doesn’t appear to be dimming excitement among U.P. anglers.
“It’s an opportunity for people to get out and catch something they’ve never caught before, without having to travel halfway across the world to find it,” said Joe Hansen, who leads the South Shore Fishing Association in Marquette.
Because grayling are natural river-spawners, they aren’t expected to reproduce in the lakes, said Ed Eisch, the DNR’s fish production manager. That’s by design: The DNR still hasn’t decided where it wants grayling to thrive in Michigan long-term.
The oldest hatchery broodstock are nearing adulthood, and could reproduce as soon as 2025. The DNR hopes to use their fertilized eggs to create a self-sustaining population of wild Arctic grayling in Michigan rivers.
DNR officials are still deciding where they hope to seed a permanent population. They’re considering the Upper Manistee, Boardman, Jordan, Maple and Au Sable, five watersheds north of M-55.
Arctic grayling require cold, clear water free with abundant shade, ample habitat and limited competition from non-native fish species like brown trout that now dominate northern Michigan’s rivers.
Previous reintroduction attempts in Michigan have failed. But scientists believe this time will be different, thanks to new techniques and a better understanding of what the fish need to survive.
Rather than transplanting young hatchery-reared fish into rivers, scientists plan to hatch grayling eggs directly into the streams where they’ll live, allowing them to develop an instinctual memory of the birthstream where they’ll eventually return to spawn.
