Powell, WY (AP) - Wildlife managers say 100 to 200 fish were found dead in Horseshoe Reservoir at Yellowtail Wildlife Management Area, probably because of the cold winter.
The Powell Tribune reports the bass, sunfish and trout were found last week.
Brad Welch, hatchery supervisor at Tillett Springs Rearing Station, says many others survived.
The hatchery is about 17 miles northeast of Lovell and raises the rainbow trout stocked in a pond.
Welch says heavy layers of ice and snow prevented sunlight from reaching the plants in the pond, and when the plants decomposed, the fish died due to lack of oxygen in the water.
Pat Long, senior fish culturist at the hatchery, says winter kill is a natural occurrence. He says Renner Reservoir near Ten Sleep also had fish kill.
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