How long can Arowana recover after turning over its belly depends on the reason why they turn over their belly. If Arowana turns over its belly because of lack of oxygen, the breeder only needs to ensure that there is sufficient oxygen in the water in which they live, and they can recover in a few hours. If they turn over because of the discomfort of their living environment, and the breeder ensures that their living environment is comfortable, they can generally recover in 1-2 days. If the arowana tumbles due to an imbalance or other disease, the breeder needs to treat the disease before recovering. If the illness is serious, it is very likely that it will not recover and die directly.

1. Keep sufficient oxygen: Arowana has a high demand for oxygen, and if there is lack of oxygen, it is easy to turn over its belly. Breeders need to turn on the oxygen pump immediately to ensure that there is enough oxygen in the water they live in.

2. Keep the environment stable: Breeders should also keep the environment in which they live stable, so as to avoid too much environmental fluctuation to stimulate them and make them have more stress reactions.

3. Lower the water level: The breeder needs to lower the water level immediately after the arowana turns over its belly and straighten the fish's body. In this way, the disease can be prevented from worsening, and then symptomatic treatment can be given according to their performance.