The reaction shown on this picture, where the body
slime seems to drift off the fish, and it looks like it been dipped in clotted
milk has several causes.
One is pH shock. If this is the case, then all
the fish in the pond should look the same.
If it's a new fish in a
quarantine pond, it could still be pH shock, but if the pH is safe - you've
CHECKED, then the main other cause the infection will be of either trichodina,
costia, or a massive fluke infection (which is salt resistant).
If so,
the fish will slowly get worse and spend its last hours swimming near the
surface at a temperature below 15
oC.
This is also a sign of
K.H.V. and the milky appearance would have taken around 7-14 days to developed
at a temperature above 20
oC and very quickly get worse, to the point
where the fish looks very ill within the 14 days.
