Puffer fish should not be raised in cold water, because they are tropical fish and like higher water temperature. Only in comfortable water temperature can they develop better. Although they have a wide range of adaptations to water temperature, raising them in cold water will affect their appetite and activity. Living in cold water for a long time, their growth state and growth speed will be greatly affected. After a long time, puffer fish's physique will also decline, and it is easy to get sick and die. If conditions permit, it is best not to put puffer fish in cold water.

Puffer fish can be raised with tap water, but different species of puffer fish have different breeding methods. If it is a puffer fish living in fresh water, take out tap water and expose it to the sun for about 2 days, then it can be used directly for them. If puffer fish live in seawater, it is necessary to add some sea salt before using tap water, which can simulate the seawater environment and avoid their discomfort. Moreover, after changing water every time, sea salt should be added appropriately, so that puffer fish can live more comfortably.

Puffer fish have strict requirements on water quality, and they like to live in clean and refreshing water. During artificial breeding, it is necessary to change water regularly to keep the water quality clean. It is also necessary to clean up impurities in water regularly to slow down the deterioration of water quality.