Among fish, pike can be called the "longevity star" and can live to be over 200 years old. Dog fish live in the cold area of the northern hemisphere, and its longevity may be related to this cold living environment.

2. The longest-lived ornamental fish in the world.

At present, according to the research of scientists, koi fish is one of the longest-lived ornamental fish in the world, and its longest life can reach more than 200 years. Koi fish belongs to CYPRINIDAE in biology, and CYPRINIDAE is the largest family of all fish species, exceeding 1400 species. It is a kind of high-grade ornamental fish that is popular in the world today. It has the reputation of "a living gem in water" and "a swimming work of art". Because of its low requirements for water quality, miscellaneous eating habits and easy reproduction, it is welcomed by people. Koi fish is an ornamental and various common carp, which lives in rock ponds and aquariums. Surprisingly, the life span of some koi fish can exceed 200 years, among which the koi fish with the longest known life span is called "Hanako", which died on July 7, 1977, with a life span of 226 years.

3. The longest-lived goldfish in the world

A comet goldfish named "Tish" died quietly in a fish tank at the age of 43, making it the longest-lived goldfish in the world. 1956, Tish became a member of the Hande family in Yorkshire, England. It was won back by 7-year-old Peter Hande from a local playground.

4. The longest-lived red shirt fish in the world.

After strict inspection, a red shirt fish in Australia was judged to have lived for 84 years, setting a record for fish life in Western Australia. Northeast Network According to the Australian edition of Sing Tao Daily, on 20 13 1 1 month, a task force to analyze the health status of fish in the southern coast of Australia caught a red shirt fish. After close inspection, the task force concluded that it had lived for 84 years, setting a record for fish life in Western Australia.

5. The longest-lived catfish in the world.

An Italian fishing enthusiast fished in the Po River Delta of Italy as usual. After a while, he found a fish hooked, and he began to take in the line. He found that this time it was much more laborious than before. As can be seen from the picture, his upper body leaned back directly. Fighting with this fish for a long time, this fish finally appeared after being exhausted. It is a giant catfish and is called "cannibal" by Europeans. Drag it ashore, because it is difficult for one person to get it, and the person in charge of shooting dragged it ashore with him, so there was no photo taken during the process. Look at its huge mouth and you will know why it is called "ogre".