Koi fish, which belongs to CYPRINIDAE in biology, is a kind of advanced ornamental fish popular in the world today, and has the reputation of "living gem in water" and "swimming artwork". It is praised and loved by people because of its low requirements for water quality, miscellaneous eating habits and easy reproduction.
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 cultivation by the Japanese people, there are now more than 100 varieties. According to documents, koi fish was first raised and watched by Japanese nobles in a pond, which is rare for civilians. Originally called Fei carp, color carp and flower carp, it was renamed koi fish after World War II. 1973 As a friendly envoy of the Chinese and Japanese peoples, japanese koi settled in China. Japanese boys' day also hangs the "carp flag", which shows the Japanese love for koi fish.
Koi fish originated in China, flourished in Japan, and then returned to China, which can be described as a process of "export for domestic sales". Nowadays, koi fish is loved by more and more people for its unique masculine beauty, and even known as the "king of ornamental fish".
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.