Infectious Pancreatic Necrosis Virus (IPNV) is a virus that primarily affects fish, particularly salmonids like trout and salmon. It is known to cause severe disease in young fish, leading to high mortality rates. The virus attacks the pancreas and other organs, resulting in necrosis, or tissue death, which can severely impact fish health and aquaculture. IPNV is transmitted through contaminated water, infected fish, or equipment. It can survive in the environment for extended periods, making control and prevention challenging. Vaccination and biosecurity measures are essential for managing outbreaks in fish farms and protecting aquatic ecosystems.