Hello everybody , I got two clownfish a few weeks ago and I just noticed one of them had this mark . The one that has it gets picked on a lot by the other which I heard is natural when deciding who will be the female but this seems extreme . Also the other one does this weird vibrating thing every once in a while. I couldn't draw so I'll say where it is its , its the mark on the first white band. It looks a bit like a zit, a bit like a crater. Defined white, pin point in the middle, reddish ring then the edge of the white band.