Golden koi do not have strict requirements on water temperature and water quality. Generally, the best water temperature is 20~25 degrees Celsius. In this temperature water, golden koi swim actively, have a strong appetite, have a strong physique and bright colors.

Controlling the water temperature that is most suitable for the growth of golden koi can make golden koi A comfortable environment and rapid growth are more ideal. Golden koi live in water relying on gills to absorb oxygen dissolved in water, and send oxygen to the fish body to combine with the absorbed food nutrients to generate energy to maintain life, so whether there is sufficient oxygen in the water is to raise golden koi. The key is that the oxygen required per kilogram of body weight per hour is 35 mg/L when the water temperature is 5-6 degrees Celsius, which proves that the higher the water temperature, the greater the oxygen consumption.