generally have five fins, namely, the caudal fin, the anal fin, the dorsal fin, the pelvic fin, and the pectoral fin, but there are also individual species of goldfish that do not have a dorsal fin, such as the common egg goldfish, many of which do not have a dorsal fin.
is the function of the goldfish fin? 1. The tail fin: The tail fin is mainly responsible for providing power for the goldfish to swim, just like the propeller on the boat. With the existence of the tail fin, the goldfish can swim forward smoothly. In addition, if the tail fin is lost, the goldfish can not turn.
2. Anal Fin: Its main function is to maintain the balance of the goldfish's body and make the goldfish swim more harmoniously. Without the anal fin, the body of the goldfish will sway.
3. Dorsal fin: Similar to the anal fin, its main function is to maintain the balance of goldfish.
4. Pelvic fins: The pelvic fins of goldfish are somewhat similar to the hind limbs of land animals. They can not only help goldfish keep balance, but also help goldfish turn and rise and fall. Without pelvic fins, the goldfish will appear to sway significantly.
5. Pectoral fins: The pectoral fins of goldfish can not only control the direction of goldfish, but also play a role in slowing down. If the tail fin of the goldfish does not move, the pectoral fin will block the goldfish and stop. When you want to turn to one side, move the pectoral fin on the other side, and the goldfish will turn like the side of the pectoral fin that does not move.
