Anglers urged to keep any lake trout under 25 inches

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Courtesy: Utah Division of Wildfire Resources

VERNAL, Utah (ABC4) – According to the Utah Division of Wildlife Resources, DWR, several agencies are asking for anglers to keep any lake trout they catch under 25 inches at Flaming Gorge, in an effort to improve the health of the fishery.

According to the DWR, the Mac Attack Derby, a collaboration between the Utah Division of Wildlife Resources, the Wyoming Game, and Fish Department, and the Flaming Gorge Chamber of Commerce to focus on the restoration of the trophy fishery at Flaming Gorge Reservoir.

The Mac Attack Derby is scheduled to take place on April 24-25 and is open to both boating and shoreline anglers. Each angler can submit 12 lake trout less than 25-inches each day of the tournament. Prizes will be awarded for the most pounds of lake trout turned in during the two-day fishing tournament, the DWR shares.

The fishing tournament was created in 2019 to encourage anglers to target and harvest small lake trout in Flaming Gorge Reservoir, the DWR adds,

Flaming Gorge Reservoir is a popular reservoir located in northeastern Utah — known for producing some of the largest lake trout in the U.S. and has too many small lake trout in it, the DWR shares.

In Flaming Gorge, lake trout larger than 25 inches primarily consume kokanee salmon and rainbow trout. The DWR says if the abundant population of smaller lake trout (under 25 inches) is not reduced, there could be impacts on the salmon and rainbow trout populations, as well as fewer fish to feed the trophy lake trout. 

“In the 1990s, an 8-year-old lake trout was about 30 inches long,” Ryan Mosley, DWR lead fisheries biologist at Flaming Gorge shares. “Today, an 8-year-old fish is about 23 inches long. On top of the decreased length, the number of small lake trout in the reservoir has increased, and we’re concerned the situation is going to get worse. We’re managing for a balanced fishery of predators and prey, and currently, there are too many predators. Reducing the number of small lake trout now will mean healthier lake trout in the future, while also increasing the survival of trout and salmon that are highly sought after by anglers. They’re already growing slower and unless we can ‘thin the herd,’ it will only get worse.”

The DWR says harvesting and reducing the number of smaller lake trout would provide more food for the remaining fish to eat, which would do two positive things:

  • Allow more salmon and rainbow trout to survive so there are more for anglers to catch (because smaller lake trout also compete with salmon and rainbow trout).
  • Allow the remaining lake trout to grow faster and larger (because kokanee salmon and rainbow trout are the primary fish the trophy lake trout prey on).

“Many anglers don’t realize the smaller lake trout are quite tasty,” Mosley said. “They’re one of my favorite fish to eat. In Flaming Gorge, only kokanee salmon rival them in taste.”

Remember, the lake trout daily limit is 12, with only one of the fish exceeding 28 inches.

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