Spring Viremia of Carp is a viral disease that primarily affects common carp and other cyprinid fish. It is caused by the Spring Viremia of Carp Virus (SVCV), which can lead to high mortality rates in infected populations, especially during the spring months when water temperatures rise. The disease is characterized by symptoms such as lethargy, swelling of the abdomen, and lesions on the skin. Infected fish can spread the virus through direct contact or contaminated water. Effective management includes monitoring fish health and controlling the movement of infected fish to prevent outbreaks in wild and farmed populations.