What Is the Use of a Fish's Fin?

Fishes usually have fins, for example, dorsal fins on the back, caudal fins on the tail, and pectoral fins on the bosom, as well as ventral fins and analfins.

Each fin has its own special function. if a fish's body is likened to a small boat, the caudal fins are like a scull and rudder, and the pectoral and ventral fins are the oars. A fish moves its fins and body to swim back and forth in the water. The dorsal fins keep the fish's body balanced. If the dorsal and anal fins. are destroyed, some fish will turn upside down in water.

Some fishes, such as hailtails and sail- fishes, grow long and sharp sticks on the ventral fins to protect themselves from being attacked by other animals in the water.