Red carp, as an ornamental fish, was very popular in Ming Dynasty. It is said that koi fish originated in Longzhou, Xingguo, Jiangxi, and koi fish, Hangzhou, Zhejiang, and was introduced to Japan from China in the early days. After long-term artificial breeding by the Japanese people, there are now more than 65,438+000 species. According to documents, Japanese nobles first put koi fish into the pool to watch, which is rare among civilians. At first, it was called "Fei carp" and "Se carp".
Koi fish has a strong physique, bright colors, changeable patterns and beautiful swimming posture, which is of great ornamental and breeding value. Its body length can reach 1- 1.5m, and its life span is extremely long. Can live 60-70 years (according to legend, koi fish is 200 years old), which means good luck and is said to bring good luck to his master. It is a popular feng shui fish and ornamental pet.
Koi fish's living habits
Koi fish has a strong adaptability to the environment, with an adaptation temperature of 2 ~ 30℃. But it can't resist the sharp change of water temperature. When the temperature suddenly drops or rises by 2 ~ 3℃, it is easy to get sick. If the temperature fluctuates by 7 ~ 8℃, the fish will crawl under the water and can't eat. If the temperature suddenly changes greatly; Koi fish will even die immediately. The most suitable water temperature for living in koi fish is 20 ~ 25℃. At this water temperature, koi fish is active in swimming, with a strong appetite, strong physique and bright colors.