1 to ensure sufficient space: Parrot fish has high requirements for space and strong territorial awareness. If they don't have enough living space, they will attack other fish to grab territory. In order to prevent them from attacking other fish, the breeder should prepare a larger fish tank for them, which can ensure that they have enough room to move and reduce the situation of fighting.

2. Ensure adequate food: Parrot fish has strong ability to grab food, and its demand for food is also relatively high. If the breeder doesn't feed them enough food, they will attack other fish. Breeders need to feed them regularly and quantitatively, so as to ensure adequate food and avoid indigestion.

3. Reduce the number of parrot fish: If the parrot fish attacks other fish all the time, the breeder can reduce the number of parrot fish and increase the number of other fish. In this way, they are afraid to attack other fish easily.

1. Keep the water quality clean: After the parrot fish is injured, the breeder must first ensure that the water quality in which they live is clean, so as to avoid bacterial breeding and wound infection.

2. Apply anti-inflammatory drugs: If the injury is serious, the breeder can apply potassium permanganate to them. It is best to apply it once a day, and it can be relieved by applying it continuously for about a week.

3. Keep the environment stable: During their recovery from injury, the breeder should also ensure that the water temperature and quality of their life are stable. This can not only ensure their life is more comfortable, but also speed up their recovery.