(1) Symptoms:
The skin and fins of the affected koi lose their original luster, becoming dull in color. A grayish-white film-like substance appears on the body surface, and the fin rays adhere together, preventing them from spreading open.
(2) Preventive Measures:
During water changes and in winter, pay attention to temperature changes to prevent excessive temperature differences, which can effectively prevent this condition.
(3) Treatment Methods:
For koi already affected, raise the pond temperature by a few degrees Celsius and allow them to rest in a calm environment.
Maintain a constant water temperature, soak the sick fish in a 1% saline solution, and increase lighting to promote recovery.