Number of deaths Within 3 to 5 days after administration, a decrease in the number of deaths per day of diseased aquatic animals indicates that the drug is curative. If the mortality rate has not declined after 5 days of medication, the medication can be determined to be invalid.
Aquatic animals that swim in a healthy state tend to swim in clusters, and most of the aquatic animals that are affected are isolated and swim alone or lying still at the bottom of the pond. If the selected drug is effective, the swimming status of the sick aquatic animals will gradually improve.
The food intake of aquatic animals after food intake is generally declining, and the food intake should gradually return to the healthy food intake level after medication.
Diseases with different clinical symptoms have different typical symptoms. If the symptoms are improved or disappeared after administration, it can be determined that the drug treatment is effective.
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