Im sure what it is...but mine had cloudy eyes and ich and I didnt know what else to do. So what I did was took rodi microwaved it to get it to perfect temperature as the tank the clown was in and literally threw the clown into rodi for exactly 5 mins. At first the clownfish laid on its side but my friend said its nkrmal and eventually it swam around. At exactly 5 mins I tossed him back into his tank. That following night the clown started eating again and the spots were gone. 3 days later I did the same thing just to make sure. It has been a few weeks now and the clown is super healthy. Fresh water dipping