What are the treatment methods for common diseases in parrot fish?

Parrot fish are medium-to-large fish and should be kept in a larger tank, with enhanced water cleanliness and oxygenation. Tropical fish have short lifespans, generally only 2 to 3 years (small fish), and promptly curing fish diseases is an important means of extending their lifespan. The key points for preventing and treating common diseases in parrot fish are as follows:
Symptoms of illness
Sometimes different diseases have the same symptoms, so special symptoms must be used as the main basis for a definitive diagnosis.
1. The sick fish is listless and lethargic, commonly known as “not present”, with a marked decrease in activity;
2. It stays away from the group, hiding in corners or crowding together.
3. The caudal fin and dorsal fin do not extend, commonly known as clamped tail.
4. Poor appetite, not competing for food.
5. Body surface color is not bright.
6. The appearance of special lesions or symptoms on the body is the main basis for diagnosis. For example: spots, rotting patches, redness and swelling, edema, congestion, blood stasis, bleeding, abnormal color, increased mucus, shedding of mucus, or rubbing its body surface or fins everywhere, darting around and swinging left and right, and other abnormal manifestations.
7. For tropical fish to contract an infectious disease, 3 conditions must be present:
① Pathogen: bacteria, viruses, fungi, parasites, etc.
② Routes of transmission: contaminated water, equipment, water fleas, sick fish, etc.
③ Susceptible animals (fish): most fish of the same species contract the same disease at the same time.
Measures when sick fish are found
1. First distinguish whether it is an infectious disease and diagnose it promptly. If a definitive diagnosis cannot be made, leave everything temporarily unchanged or manage them as if it were an infectious disease.
2. The group of fish or individual fish with an infectious disease should be strictly isolated, and all breeding equipment must be used separately.
3. According to the progression of the disease, food may be withheld or feed reduced as appropriate, and their feeding and activity should be observed in detail. After a definitive diagnosis, medication may be administered as appropriate.
4. During the outbreak, strengthen feeding management, pay attention to water temperature changes, and preferably keep it constant. Changing water should be done with particular caution. Sick fish may also be culled as appropriate.