It's been a while since I posted here, but im having an issue and im really worried about the fish. I come home from school and I look and see a little bit of white ontop of his head, then he turns around and his scales are puffed up! Like pineconing, but only in a small area near the top of the fish. It has white under the scales. Should I add stress coat? Ammonia is 0. My profile pic is a pic of my aqaurium if you think he scratched himself.