1. Reason: The eye drop on one side of Arowana may be caused by uneven light distribution, and there is no light on the side of fish tank or too strong light, which will cause them to drop their eyes. For example, many breeders put arowana in sunny places in order to let them receive natural light. However, the fish tank of Arowana is relatively wide, and the other side cannot receive natural light. In the long run, one side of the eye will fall off.

2. Solution: It is best for breeders to install aquarium lights around the fish tank. If they are worried that the surrounding light is too strong, they can choose several night lights with lower power. When the natural light is strong, the breeder can cover it with black cloth or other items.

1. Reason: Arowana is an upper fish and likes to move in the upper waters. If the breeder adds decorations to the bottom of the fish tank or has bottom fish, it will attract the attention of arowana, causing them to lose their eyes on one side.

2. Solution: Breeders should try not to place decorations at the bottom of fish tanks, and do not raise some brightly colored bottom fish. Usually, table tennis or plastic bottles can be placed on the upper layer of the fish tank to attract the attention of Arowana and relieve the eye drop.

1. Reason: The eye drop on one side of Arowana may also be caused by bacterial infection. Poor water quality will lead to a large number of tuberculosis and Vibrio, and then invade the eyes of Arowana.

2. Solution: Breeders need to change water first to ensure clean water quality. Then use yellow powder, oxytetracycline or penicillin to give sick fish a medicinal bath. After sterilization and disinfection, try to feed floating feed, so that after a week or so, the arowana's eye loss can be restored.