oh this is terrible..the fish was in my main tank so I really need to know what it could be. Today I got a good look at him and seems to be on his head , brown bumps or like a brown wart ... any ideas , guesses , anything ????
really hard to tell, doesn't look like damage or infection so i wouldn't be overly paranoid about it spreading but obviously worth keeping a close eye on all the other fish.
I guess just keep the water clean and keep an eye on the others, not really much else you can do