Methods to prevent parasitic disease in Luohan fish:

1. Ensure water quality. Change the water in time and clean up food residue and feces regularly. The water quality changes faster due to high temperatures in summer, so the frequency of water changes should be relatively increased to avoid water quality fertilization.

2. Be sure to trap water when changing water. It can remove chlorine from the water and avoid damaging the nitrification system in the fish tank, which may lead to decreased immunity of the fish and parasitism by parasites.

3. Pay attention to the water temperature. When changing the water, you can add a little warm water appropriately after the water is trapped, so that the temperature of the new water and the water in the original tank will not differ too much.

4. Strengthen filtering. Equip a good filtration system and clean the filter cotton regularly to prevent the filter cotton from becoming a breeding ground for bacteria, which will cause the Luohan fish to become parasitized due to poor resistance.

5. Handle food. Luohan fish likes to eat live animals, but live animals also carry a lot of parasites. Live animals must be processed before feeding them to Luohan fish. Some drugs and vitamins can also be appropriately added to make bait, which can play a preventive role.

6. Avoid mixed culture. It is best to keep Luohan fish alone. If some of the fish in the mixed culture are infected with parasites and are not treated in time, they may be transmitted to Luohan fish.