1. Increase space: Tigers may attack Arowana because of insufficient living space. Both of them belong to large fish, and their body size is larger in adulthood. In addition, they have a strong sense of territory. If there is not enough space, they will fight. Breeders need to prepare a larger fish tank for them, so as to ensure that they have enough living space and avoid fighting.

2, plenty of food: Tigers may fight arowana because they compete for food. They are fierce in character and prone to conflict. Breeders need to feed them regularly and quantitatively, which can help them develop good eating habits. This can ensure that they have enough food and avoid indigestion.

3. Proper isolation: If the fight between tiger fish and arowana is serious, the breeder needs to separate them. If you don't want to breed separately, you can place a transparent partition in the fish tank, which can not only avoid fighting, but also make them familiar with each other's existence, so as to ensure that they can be mixed together in the future.

After Arowana is injured, breeders should first separate them from other fish, so as to avoid their re-injury. Secondly, we should use potassium permanganate or erythromycin ointment to smear the wound to avoid infection. Finally, keep the surrounding environment stable, keep the PH value between 6.5 and 7.5, and keep the water temperature between 28 and 30 ℃ to avoid bacterial infection of wounds.