[viruses]
   Family Iridoviridae
     Subfamily Alphairidovirinae
       Genus Ranavirus
         1 Ambystoma tigrinum virus
         2 Common midwife toad virus
         3 Epizootic haematopoietic necrosis virus
         4 Frog virus 3ᵀ
         5 Santee-Cooper ranavirus
         6 Singapore grouper iridovirus