Aquabirnavirus is a genus of viruses that primarily infects aquatic organisms, particularly fish. It belongs to the family Birnaviridae and is known for its double-stranded RNA genome. These viruses can cause significant diseases in fish, leading to economic losses in aquaculture. The most notable member of this genus is Infectious Pancreatic Necrosis Virus (IPNV), which affects salmonids and other fish species. Symptoms of infection can include lethargy, abnormal swimming, and high mortality rates. Understanding Aquabirnavirus is crucial for managing fish health and ensuring sustainable aquaculture practices.