Crabs can be very effective for many different fish. Some fishermen know how to catch them by hand, but it is much easier to catch them with a fishing line and a fresh piece of chicken or even a chicken bone. Drop your chicken down and you will have no problem catching plenty of bait. Shallow bays, creeks, canals and marshes are the best places to find crabs. Hard-shell crabs and soft-shell crabs work well for a variety of species. Hard-shell crabs will catch tarpon and black drum. Soft-shell crabs are great for tarpon, black drum, snook, redfish and blackfish. Pieces of crab will work for many smaller fish.