Add Yahoo as a preferred source to see more of our stories on Google. Clockwise, from top left: minnow, crayfish, sunfish, shad, frog, and grasshopper. Fathead minnows, leeches and worms are mainstays ...

Crayfish are an unsung hero of South Carolina's waters — the critters help clean polluted waterways and occupy a critical spot on the region's food chain. Believed to have first crawled into existence ...