I have had this fish for 2 years in my tank and now he developed this tumor looking things on it's nose a week ago and it's getting worse. I took him out of my 265 and put him in his own tank. He is eating and acting fine but the look of him has me scared. I have alot of fish in the 265 he came from and no new fish in over a year. I have a uv on it also and all other fish look fine. Any thoughts of what this is and how to fix him? And should I be concerned about the other fish in the 265? Thanks guys
