Fish can't survive without oxygen, and they need to breathe just like human beings. If the space is small and there are more fish, oxygen must be done. Under normal circumstances, if the single-cultured betta fish does not need oxygen, because the density of the single-cultured betta fish is not large, even if the fish tank is relatively small, the dissolved oxygen in the water is enough for the single-cultured betta fish to breathe, and the betta fish can breathe air directly.

Betta fish have a unique body structure, and they have one more organ that can breathe air than other fish, which leads to their lack of oxygen even if the dissolved oxygen is insufficient. Some people think that betta fish is an ornamental fish, and it will look better when raised with other ornamental fish, which will lead to the situation of insufficient dissolved oxygen in dense fish schools. At this time, oxygen must be given, otherwise it will lead to lack of oxygen in fish.

There are many good oxygen pumps made in China, and the mute effect such as Jiadiaoni is very good. Choosing oxygen pump mainly depends on the specific situation of raising fish. Usually, the function of oxygen pump is to press air into water and increase the dissolved oxygen of water, so as to ensure that the fish in the fish tank can breathe freely. Therefore, for betta fish, which can breathe air by itself, the requirements for oxygen pump are not high, so the general oxygen pump is ok.