without oxygen. The map fish can hold for about 12 hours without oxygen. How long it can hold depends on the feeding environment. If the fish tank is large and the water quality is refreshing, they can persist for one day without oxygen. If the water in which the fish are raised is small and the water quality is poor, they can last up to half a day. In the case of extreme hypoxia, they may die in 2-3 hours. Map fish are larger and need more oxygen. If they can't guarantee enough oxygen, it will affect their normal life.
the map fish? The map fish has a large demand for oxygen. It is better for the breeder to oxygenate all day, but the oxygen pump does not need to be opened to the maximum, as long as the dissolved oxygen in the water is greater than 5 mg. If the breeder feels that it is a waste of resources to use oxygen all day, he can use oxygen during the day and close it at night. The activity of map fish at night is not large, and the oxygen needed is not much. As long as the oxygen during the day is sufficient, even if they do not use oxygen at night, it will not affect their normal life. Turning off the oxygen at night can not only save resources, but also give the map fish a better rest. Breeders can decide the time of oxygenation according to their own situation.
