Small fish, such as threadfin shad, that are often eaten by predatory fish, such as largemouth bass. This can refer to the fish that predators feed upon, or the kids of fish we place on a hook to catch a sport-fish. The use of bait fish is often regulated, so be sure to check the latest fishing regulations. Found on http://www.azgfd.gov/h_f/fishing_glossary.shtml