The optimal water temperature range for parrotfish is between 26°C and 27°C. Within this temperature range, parrotfish can maintain their bright body colors and stay energetic, avoiding body color fading, getting sick or even dying due to overly low water temperature or excessive fluctuations in temperature. Besides, parrotfish are very sensitive to changes in water temperature. Although they can still survive in water with a temperature between 20°C and 30°C, the best temperature for their growth environment is between 25°C and 30°C if the water temperature drops below 21°C or rises above 35°C.
To ensure the health of parrotfish and their bright body colors, it is recommended to keep the water temperature between 26°C and 27°C and try to avoid drastic fluctuations in water temperature as much as possible. When changing the water regularly, attention should be paid to controlling the temperature difference to prevent any adverse effects on the fish.