yup, a personfer angel bout a medium size, treated straight away(bout a day after symtoms showed) with copper, went away but died a week after for no reason, and it was eating well and the copper god rid of it, but i dunno what happend, maby the copper killed it even tho the levels were fine, but this is by itself with no other fish. its like a film over the whole body with fine spots, do you have a problem with it , if so treat it as soon as possible in qt