Iridovirus is a type of virus that primarily infects aquatic animals, including fish and amphibians. It belongs to the family Iridoviridae and is known for causing significant diseases in these species, leading to high mortality rates in affected populations. The virus can be transmitted through water and can survive in various environmental conditions. In addition to fish and amphibians, Iridovirus can also infect some invertebrates. The virus is characterized by its large, double-stranded DNA genome, which allows it to replicate within the host's cells. Understanding Iridovirus is important for managing fish health and maintaining biodiversity in aquatic ecosystems.