You want more Kokanee and bigger lake trout. You gotta harvest more small lake trout.

Green River – Hone your Mac fishing skills and see how you stack up against other anglers during the new Mac Attack Fishing Derby; targeting lake trout less than 25 inches. Prizes will be awarded for the most pounds of lake trout entered during the two day derby on April 27-28. The Mac Attack is open to both boat and shore anglers. Lake trout forage close to shore during the spring which will make shore anglers competitive in this derby.

Fisheries managers have been tracking a growing population of small lake trout, those less than 25 inches, for a while now. While all these small lake trout are providing excellent fishing and great table fare, is it possible that this is a problem?

The answer is yes, according to Robert Keith, Regional Fisheries Supervisor for the Wyoming Game and Fish Department. “Our trend netting data documents the increasing abundance of small lake trout and a study completed in 2016 shows their growth rates have slowed dramatically since the 1990s. In 1992, an eight-year-old lake trout was 31 inches and over 10 pounds. In 2016, an eight-year-old lake trout was only 22 inches and about 3 pounds.”

It is also known that smaller lake trout, when they have the opportunity, eat other valued species in the Gorge such as Kokanee salmon and trout. Reducing the number of small lake trout in the reservoir will increase the number of Kokanee and trout that are available for anglers and allow the remaining lake trout to grow faster.

And that’s where anglers can make a difference. “Angler harvest can be an effective tool for managing fisheries”, says John Walrath, Regional Fisheries Biologist

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