Add Yahoo as a preferred source to see more of our stories on Google. George Macias picks up crawfish traps while harvesting the catch at Bayou Best Crawfish Farm in Sour Lake, Monday, Feb. 9, 2026.

KAPLAN, La. — Josh Courville has harvested crawfish his whole life, but these days, he's finding a less welcome catch in some of the fields he manages in southern Louisiana. Snails. Big ones. For ...