If goldfish do not use oxygen, it is necessary to increase the dissolved oxygen in water, so as to ensure that the goldfish has enough oxygen to breathe in water. Usually, goldfish are raised in large pots or barrels, because the space in large pots or barrels is relatively large, which can make fish have enough living space on the one hand, and increase the dissolved oxygen in water on the other hand.

Generally, people who raise goldfish know that when raising goldfish, they must change more water, which can not only ensure clean water quality, but also increase dissolved oxygen in water. If the container for raising goldfish is relatively small and the number of goldfish is relatively large, it is best to play oxygen, because when the number is large, goldfish will basically lack oxygen.

goldfish need more oxygen than other fish, so it also has high requirements for dissolved oxygen in water. In daily life, some people may find that sometimes goldfish will float. In fact, goldfish has been deprived of oxygen at this time, and severe hypoxia will directly lead to the death of goldfish. When there is a floating head, it is necessary to use an oxygen pump to beat oxygen. If you don't want to use an oxygen pump, you should change to a big fish tank and reduce the number of fish, so that the dissolved oxygen in the water is enough, and it won't cause goldfish to lack oxygen.