Chinese betta fish have strong physique and strong adaptability to the environment, so they can spend the winter in cold water. Under normal conditions, their optimum growth temperature is between 25-28 ℃, but they can also endure a low temperature of not less than 3 ℃ in a low temperature environment. Therefore, when the cold water temperature is not lower than 3 ℃ in winter, they can spend the winter safely.

Chinese betta fish has strong physique and can endure the low temperature environment of 3 ℃. In winter, there is usually no need for heating.

There are two kinds of betta fish in China, one is round-tailed betta fish and the other is fork-tailed betta fish. Most of the round-tailed betta fish live in the north, and they can grow in the water temperature environment between 6-30 ℃, among which the most suitable growth temperature is between 24-27 ℃. Because there is indoor heating in the north, if they are kept indoors in winter, they usually do not need to be heated and maintained. Most of the fork-tailed betta fish live in the south. They can survive in the low temperature environment above 0 ℃ and grow well in the water temperature environment above 15 ℃. Because there is no heating in winter in the south, they can choose whether to heat them according to their local actual situation.