Biologists Use Electricity to Save Trout

JACKSON, Wyo. (AP) – Biologists are making their first use of electroshock in their efforts to save native cutthroat trout in Yellowstone National Park from another voracious species of trout.

The treatment is being done to kill off lake trout that have invaded Yellowstone Lake when the unwanted fish is still spawning and in the earliest stages of its life.

Netting of lake trout had been the park’s main method of suppression.