JACKSON, Wyo. (AP) — Some anglers are questioning a new rule that allows for the catch and kill of any nonnative trout in Yellowstone National Park.

Yellowstone officials pulled the cap on brook, brown, lake and rainbow trout this season in all park waters except the Madison and Firehole rivers, the Gibbon River below Gibbon Falls and Lewis and Shoshone lakes.

Officials say the change is intended to help with the restoration of native cutthroat trout and arctic grayling.

But some fly shop owners and outfitters who are dependent on Yellowstone's fisheries fear it may result in too few game fish in the future.