Siraitia grosvenorii still have a large demand for oxygen, because they are tropical fish and like higher water temperature. In high temperature environment, the amount of dissolved oxygen in water will decrease. They are also too large, and when they are active normally, they will consume a lot of oxygen. In addition, their metabolic ability is relatively strong, and their pollution to water quality is also relatively serious. After the water quality deteriorates, the oxygen in the water will decrease sharply, so the demand for oxygen in Siraitia grosvenorii is still relatively high. When Luohan fish lacks oxygen, it will have floating head and shortness of breath. If the breeder finds these situations, he needs to turn on the oxygen pump immediately to ensure sufficient dissolved oxygen in the water.

If there is a filter in the fish tank where Siraitia grosvenorii is raised, the breeder can choose to oxygenate them during the day and turn them off at night. Because their activity is higher during the day, their demand for oxygen will be greater. At night, they will rest, their activity will decrease, and their demand for oxygen will naturally decrease. In addition, the filter is installed, which can supplement a small amount of oxygen. Without oxygen at night, the water flow can be reduced, so that they can have a better rest.

If there is no filter in the tank of Siraitia grosvenorii, the breeder needs 24 hours of oxygen. Because oxygen loses rapidly in a high temperature environment, breeders must take oxygen for 24 hours to ensure that they can move normally.