1. Do you need oxygen for fish culture in vats? Oxygen is best for fish culture in vats. Whether you need oxygen or not has nothing to do with the size of the fish tank, mainly depending on the feeding density and the size of the fish. When the feeding density is high, the oxygen consumption is high. Similarly, the oxygen consumption of large fish is also relatively high, so oxygen is needed in these cases. However, no matter what fish tank, no matter what fish is raised, it is better to get oxygen than not to get oxygen. An environment with sufficient oxygen not only helps breathing, but also promotes metabolism.
2. What fish don't need oxygen1. Goldfish: Goldfish is a common ornamental fish with many varieties and has a long cultivation history in China. This kind of fish does not have a high demand for oxygen, so it does not need special oxygenation equipment. Moreover, as a wide-temperature fish, it has strong adaptability to temperature and miscellaneous feeding habits, so it is very easy to raise.
2. Guppies: Guppies is a small tropical fish. Because of its small size, its demand for oxygen is not high. If the breeding density is not very high, it does not need to be oxygenated. Although this kind of fish can endure the low temperature of 16 ℃, it is best to keep the temperature between 20-30 ℃, and it is easy to get sick if the temperature is too low.
3. Betta: Betta can be divided into Chinese Betta and Thai Betta. No matter which one, it doesn't need oxygen. As a fish of the family Percidae, betta fish have auxiliary respiratory organs. When the dissolved oxygen in water is low, they will swim to the water surface and take oxygen directly from the air.
