The lowest acceptable water temperature for parrot fish is 20 ℃, because they are tropical fish and like higher water temperature. Although parrot fish can accept lower water temperature, and they will not die immediately when the water temperature is lower than 20 ℃, their appetite and activity will decrease when they are exposed to low temperature for a long time. But also prone to illness, over time, their physique will become worse and worse, and finally they will die directly. If breeders want parrot fish to grow normally, it is best to keep the water temperature above 20 ℃.

The most suitable temperature for parrot fish is 25-30 ℃, but they do not require high water temperature and can survive between 20-30 ℃. Although parrot fish does not have high requirements for water temperature, it is sensitive to temperature changes. In spring and autumn, the temperature difference between morning and evening is large, so breeders need to take heat preservation measures to make them grow and develop better.

In addition, although they like high temperature, too high temperature will also have certain effects on their health. Especially when the water temperature is higher than 32 ℃, their resistance and immunity will decline. When raising artificially, it is best to install a heating rod to keep the water temperature constant.