1. Reason: Arowana may stand upright because the water temperature is too low, and they cannot accept too low water temperature. If they are cultured in cold water, they will be stimulated and cause them to have stress reaction.

2. Rescue: Breeders need to use heating rods to keep the water temperature between 28-30 ℃. As long as the water temperature is constant, they can recover soon.

1. Reason: Arowana upright may be caused by poor water quality, and they also have high requirements for water quality. If there are too many impurities and garbage in the living water, they will stand upright.

2. Rescue: Breeders need to change water immediately to slow down the deterioration of water quality. The filter should also be turned on to clean up the feces and food residues in the water, so as to slow down the deterioration of water quality.

1. Reason: Arowana upright may also be caused by imbalance of fish body, mainly due to too large temperature difference or air squeezing into swim bladder.

2. Rescue: Breeders need to lower the water level immediately to avoid them being upright all the time. They should also fix their bodies with splints, or tie heavy objects on both sides. Finally, turn on the oxygen pump to ensure sufficient oxygen in the water. Wait for the arowana to recover on its own.