Spring Viremia of Carp Virus (SVCV) is a viral disease that primarily affects carp and other cyprinid fish. It is caused by a rhabdovirus and can lead to significant mortality in infected populations, especially during the spring months when water temperatures rise. Symptoms include swelling of the abdomen, lethargy, and erratic swimming behavior. The virus is transmitted through direct contact between fish or contaminated water and can survive in the environment for extended periods. SVCV poses a threat to both wild and farmed fish populations, making monitoring and management essential for maintaining healthy aquatic ecosystems.