1. Fight for territory: Parrots attack each other probably because they are fighting for territory. Parrots are irritable and have a strong sense of territory. If they don't have enough living space, they will fight for territory by attacking each other.

2, estrus: Although parrot fish can't reproduce, they will also enter estrus. After entering the breeding period, parrot fish will become extremely irritable and attack each other.

3. Insufficient food: Parrot fish eat a lot. If the breeder doesn't feed enough food, they will attack each other.

1. Replace the big fish tank: If you want to reduce the situation of parrot fish attacking each other, you must ensure that they have sufficient living space. Only when they have enough space for activities can they avoid fighting with each other.

2, proper isolation: After parrot fish enter estrus, the breeder can properly isolate them, so as to prevent them from attacking each other.

3. Ensure adequate food: Parrot fish eat a large amount, so breeders should ensure adequate food when feeding. If conditions permit, it is best to feed them regularly and quantitatively, which can not only ensure adequate food, but also help them develop good eating habits.