Fishing rigs are arrangements of items used for fishing. A fishing rig can be assembled from one or more of these fishing tools -a hooks, a line, a sinker, a bobber, a swivel, a lure, and other fishing tackle. A fishing rig is usually held by a rod, by hand, or attached to a boat or pier. Fishing rigs can take a lot of forms and shapes depending on the purpose. There are fishing rigs designed to sink to the bottom; others float near the surface of the water. Some are designed for trolling or designed especially for catching a single specific species of fish. Some of the specially designed rigs will function well for many different species.