What is the fin?
The first pendants are flexible pendants that reach from the body of fish or other aquatic animal, such as dolphins and certain whales. They have several features, including drive and stability help. There are two types of fins: medium and paired. Middle fins are dorsal, caudal and anal fins and paired fins are pectoral and pelvic or ventral fin. Not all fish have the same number or type of fins such as an American eel that has one continuous caudal fin, which is the merger of the back, caudal and anal fin. The dorsal fins grow from the back of the fish and can be a front or rear fin. The front fins are located closer to the fish head and the rear part is closer to the tail. The fish can have one to three dorsal fin. The heterocercal tail has a larger upper lobe and the vertebral column extends into the upper lobe. The shark's tail is a good example of the heteroceral tail shape. Homocenercal tail has two symmetrical or almost symmetrical lobes.
Thefins are located on the back lower of the fish, located behind the rectum and behind the pectoral fins on the sides of the fish. Not all fish have a full set of fins. Some fish that inhabit tight areas such as Norwegians and slits have lost dorsal and anal fins through evolution.
The pair fins are similar to the arms and legs in human anatomy. Pectorates grow closely behind the gills and are comparable to human arms. The pelvic fins are on the lower part of the body and are similar to the legs of man. Some fish, such as Atlantic Mudskipper, can walk with pectoral or pelvic fins.
fins serve several fun. Usually dorsal and anal fins function as hernias and paired fins function as a rudder. While some fish have lost some fins through evolution, other fish species have evolved fins that are more specialized. For example, flying fish have too large dorsal and anal fins, toThe terra supports the body weight of the fish during its climb of a similar flight. Lonfish has a long, flowing dorsal fin, which contains a poisonous spine that protects them from predators.
In addition to keeping fish in the water, the fins provide drive means. The tail or caudal fin is usually a source of fish energy. The shape of the tail fins can indicate the type of swimmer, which is fish. The fastest swimmers have tail fin or crescent; Continuous swimmers have visible tail fins and faster swimmers have a deeper fork. Strong, slow swimmers generally have shortened or rounded tail fin.
other fins are tasting and touch, especially the breast fins. Remora fish has a fin on the head that acts as an suction cup and allows it to attach larger fish such as sharks or whales. Through evolution, the Pipefish ghost developed a pouch for transporting its eggs with its belly. The pouch is made of two fins that have become one. Some fish like losoS and catfish, have a greasy, limp fin.