Final answer:
Bait can include a variety of organisms besides fish, such as crayfish, frogs, and worms. Species like Rusty Crayfish, Virile Crayfish, and Signal Crayfish have been transplanted to different regions through their use and release as bait.
Step-by-step explanation:
Bait can refer to various organisms used to attract and catch other animals, particularly in the context of fishing or trapping. While many people might think only fish are used as bait, this is not the case. Many other organisms including crayfish, frogs, mussels, snails, worms, and salamanders are commonly used as well. Specific species of crayfish like the Rusty Crayfish (Orconectes rusticus), Virile Crayfish (Orconectes virilis), and Signal Crayfish (Pacifastacus leniusculus) have been transferred to new areas in the U.S. due to the release of bait by fishermen.