Vertebrate iridoviruses are found in fish, amphibians, and
reptiles. Many of them are confirmed to be pathogens that
cause systemic diseases in aquaculture. Iridovirus infection of
fish and frogs is a serious problem in modern aquaculture, fish
farming, and wildlife conservation because of its epidemic
morbidity and ability to cause mortality. Systemic iridoviral
infections have been previously described for a variety of freshwater
and marine food fish species (18, 22, 32, 37), tropical
freshwater ornamental fish (40), frogs (20), and salamanders