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Symptoms and Prevention and Treatment Methods of Spring Viremia of Carp in Koi

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Spring Viremia of Carp (SVC) is mainly caused by Rhabdovirus carpio. It is a common disease in koi keeping and only becomes epidemic when the climate gradually warms up in spring (water temperature around 13-20.°C). It mainly affects koi over one year of age; fry and broodstock are rarely infected. It occurs mostly in outdoor rearing ponds, while koi kept in indoor fish tanks are less affected because the water temperature does not fluctuate as sharply. In

Spring Viremia of Carp (SVC) is mainly caused by Rhabdovirus carpio. It is a common disease in koi keeping and only becomes epidemic when the climate gradually warms up in spring (water temperature around 13-20.°C). It mainly affects koi over one year of age; fry and broodstock are rarely infected. It occurs mostly in outdoor rearing ponds, while koi kept in indoor fish tanks are less affected because the water temperature does not fluctuate as sharply. In nature, during the cold-water period, this disease is chronic, but after the water temperature warms up in spring it becomes acute, with a relatively high mortality rate. The main prevention and treatment measures are to pay attention to cleaning the sediment in the pond at the end of winter, strengthen the disinfection of the water source, and change the water regularly to prevent drastic changes in water quality.

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