Catching crawfish or crayfish, is what this trap was designed for. However that is not where it stops. You can catch minnows, crawdads, and some crab too! With the funneled in sides, and small openings, your catch gets trapped, and cannot figure out a way to get back out! Cone shaped inward entrances funnel crayfish into the trap Makes escape difficult Vinyl-coated to prolong use Diamond grid Steel wire welded to strong steel framing Two stackable sections for space saving storage 9" in diameter at trap center Assembled length of 16-1/2"