A few months ago Stewie came down with what people suggested as fin rot (black destroyed fins, etc). I treated him with trisulfa in a hospital tank and he got all better!
Last week he has started to just float on his side on the top of his 10g tank sitting on top of the floating plant that I added to his tank a few months back. He is barely eating or anything.
He is growing skinny and has some minor discoloration. Some minor fin damage looks like as well. I set up the hospital tank again and got it nice and clean for him, but I don't even know what's wrong with him or what to use to treat his problems.
Found a lot of snails in his tank lately too so I'm going to try to take them out for if he gets better so he can go back home.
I dunno how to help him.

He's fighting so hard and I feel so helpless. I saved him from PetCo over a year ago. Could he just be getting old and is dying?
