RENO, Nev. (AP) — A nonnative snail has turned up in the Truckee River in Nevada for the first time, and wildlife officials are hoping it doesn’t harm the river’s trout population or spread to Lake Tahoe.

Nevada Department of Wildlife officials said tests have confirmed the presence of at least three New Zealand mudsnails in the river near Reno. Now they’re trying to determine the extent of the mudsnail population.