anthia borbonius

So in the picture below, it seems one of my anthias in qt developed some kind of white tufts by his eye, seems harmless as of now, no flashing or anything, any idea on what it is? I do not think its lympho but it could be, does not have any on his fins

Hi everyone, this is my first interaction on the forum, but I follow it very often! I have had two Anthias Borbonius for 35 days. They were on a QT for 25 days, with cupramine. 10 days ago there is no more copper! I transferred them to another room for observation. Only them in the tank. 4 days...