1. Reason: Arowana may sink to the bottom because of poor water quality, and they have strict requirements on water quality. If they live in poor water quality, they will reduce their activity and lie prone on the bottom of the fish tank all the time.

2. Solution: Breeders need to change water immediately to keep the water clean. However, the amount of water change should not be too large, and it should be controlled at a quarter of the total amount of water.

1. Reason: Arowana can't move at the bottom because the living water temperature is too low. They are tropical fish and like higher water temperature. If the water temperature is too low, it will lead to their appetite and activity loss.

2. Solution: Breeders need to raise the water temperature to 28-30 ℃. After they adapt to this temperature, their activity will gradually increase, and they will naturally go to the upper layer for activities.

1. Reason: Arowana sinks to the bottom and does not move. It is also possible that the light on the upper layer is too strong, and they have certain light avoidance. When the upper light is too strong, they will stay under the water to avoid the light.

2, Solution: Breeders need to turn off the lights and avoid strong light shining on them. If it is natural light, when the light is violent, it should be properly blocked.

1. Reason: Arowana sinking to the bottom may also be caused by illness, and many diseases will cause them to sink to the bottom.

2. Solution: Breeders need symptomatic treatment according to their other manifestations. During treatment, they need to keep the water temperature constant and keep the water clean and fresh.