Whether to raise Lanshou with oxygen depends on the feeding density. Lanshou goldfish, like ordinary goldfish, does not have a high demand for oxygen. As long as they change water frequently and filter frequently, they will not suffer from hypoxia normally. In addition, in the process of feeding at ordinary times, the filter is often turned on, which can also bring a small amount of oxygen to the fish tank, so oxygen is generally not needed. But when the feeding density is too high, it is necessary to turn on oxygen. Because of the high density, the amount of dissolved oxygen in the water will decrease, and fish will suffer from discomfort or death if they are in an anoxic environment for a long time. In addition to feeding density, oxygen is also needed in high temperature or rainy days. Because high temperature will reduce the amount of dissolved oxygen in water, and rainy days will reduce the air pressure, it is better to use oxygen.

Whether to raise Lanshou depends on the feeding density. Only when the feeding density is low, the speed of water pollution will slow down. At this time, no filtration will have a great impact on Lanshou. However, breeders need to fish out the food residues and feces in the fish tank after each feeding. If the feeding density is too high, it is necessary to install filtration. Because of the large number of fish, the excrement will also increase. If the filtration system is not used, the water pollution will be more serious, which will also affect the normal life of Lanshou.