Today I went to backflush and clean skimmer and for the first time seen dead mostiquo fish at first thought maybe skimmer finally got 1 but apon further review i seen some others barely swimming and can see attached near there tail what looks like a white clear substance with specks in it, is this a parasite? Possiably a fungus? I am assuming its also attaching to my 6 large koi but water recently is getying cloudy and its hard to see them and they have been acting weird laying on bottom more then usual.
Water parameters are all normal. Temp 55 degrees. Will salting the pond help? I have some malachite green on hand.