1. Reason: Arowana may be frightened when it hits the cylinder or turns over, and they may have more reactions after being frightened. In the case of panic and bewilderment, they will turn over after hitting the cylinder.

2. Solution: Breeders should first keep their surroundings quiet, and then try their best to stabilize their emotions. The second is to turn their bodies over to avoid them turning over and swimming all the time. Finally, they can be transferred to a dark and quiet environment and wait for them to recover on their own.

1. Reason: Arowana's collision and turning over may be stimulated by sudden changes in the environment. If the water temperature or water quality changes too much, they will be stimulated, resulting in collision and turning over.

2. Solution: Breeders need to keep the environment stable, and the water temperature should be kept between 28-30 ℃, preferably with a heating rod. Then keep the PH value between 6.5 and 7.5. Pay attention to the temperature difference between new water and old water when changing water, and pay attention not to change too much water.

1. Reason: Arowana's collision and turning over may also be caused by illness, and the more common ones are external parasites or swim bladder loss.

2. Solution: The breeder needs to treat them according to other symptoms. Before treatment, the breeder can put some heavy objects on both sides of their fins to keep them balanced. If the situation of turning over is serious, they should be put on a high-pressure bag for rescue.