What is "aquareovirus"

Aquareovirus is a genus of viruses, in the family Reoviridae, in the subfamily Spinareovirinae. Fish, shellfish, and crustacean species serve as natural hosts. There are currently seven species in this genus including the type species Aquareovirus A. In general, Aquareoviruses have low or no pathogenicity for fish. However, some cause hemorrhagic disease, hepatitis and pancreatitis. Grass carp hemorrhage virus (causes hemorrhagic disease of grass carp) is the most pathogenic Aquareovirus.