Len Warren from The Nature Conservancy holds up a non-native crayfish plucked from a trap at the 7J Ranch northeast of Beatty on Feb. 8, 2019. Henry Brean Las Vegas Review-Journal

Len Warren from The Nature Conservancy holds up a non-native crayfish plucked from a trap at the 7J Ranch northeast of Beatty on Feb. 8, 2019. Henry Brean Las Vegas Review-Journal

Len Warren from The Nature Conservancy holds up a non-native crayfish plucked from a trap at the 7J Ranch northeast of Beatty on Feb. 8, 2019. Henry Brean Las Vegas Review-Journal