The family Iridoviridae currently contains fi ve genera, two of which infect invertebrates ( Iridovirus and Chloriridovirus ) and three that infect only ectother-mic vertebrates ( Lymphocystivirus , Megalocytivirus , and Ranavirus ; Jancovich et al. 2015a ). Lymphocy stiviruses and megalocytiviruses only infect fi sh, whereas, as indicated above, r…