Caudal fins are the tail fins of fish, located at the rear end of their bodies. They play a crucial role in propulsion, helping fish to swim efficiently through water. The shape and size of caudal fins can vary significantly among different species, influencing their swimming style and speed. In addition to aiding movement, caudal fins can also serve as a means of communication and display. For example, some fish use their fins to signal to potential mates or rivals. The structure of caudal fins can be categorized into different types, such as forked, rounded, or truncate, each adapted to specific aquatic environments.