However, this form of the disease
is only responsible for about 1% of the losses
observed. The acute form of the disease is the most
devastating, with heavy losses occurring primarily
overnight. There are limited clinical signs observed in
fish dying of the acute form of the disease, with the
only indication being mild corneal opacity in some
cases. The only factor that alerts farmers to a pending
outbreak comes from mortalities in rabbit fish Siganus
spp. found co-habitating barramundi cages in the days
before an outbreak,