Aw thanks for this advice. Yeah he's been like this a while and nobody else had symptoms anything like him.If none of the other tank inhabitants share the same symptoms, I doubt this is any type of parasite or bacterial thing. Given that, I wouldn't treat the tank, nor would I recommend any meds or treatments unless you know reasonably well what you are treating for. Stores want to sell products and are going to recommend everything and anything on the shelves.
If the fish isn't getting beaten to death, eats, is not in visible distress and you don't mind it in your tank, let it ride.
He just looks so sad though. Which is why I was considering clove. It breaks my heart either way. I've had a tough time with the fish losses I've had in the past month. As corona rages outside I'm feeling the most stress from here in my tank.