Karin15,
You say "no rants" etc, and this is not a rant. But.. if there is a fish that is biting other fish, then you have a compatibility problem. Yes you do need to know how to heal the fish (as miss wiggle has offered advice), but you also need to sort out the problem as to why the fish are getting hurt. You say he's not being bullied, but i doubt he thinks the same with his tail missing
Squid
he isn't, its just my gourami he randomly bites my fish, I think i'm going to give him to the pet store.
Sounds like a plan
Squid
 , i treated for any nastys and the zit didnt go and he kept chewing and chaseing my betta. Took back the golden when he finaly peed me off compleatly by chasing everybody for two days affter I added a keyhole to the tank, and uthanised the dwarf chocolate in frustration when Id had enough of looking at him terrorising my beautyful betta to the point where he looked like a rag. I HATE gourami a lot.
 , i treated for any nastys and the zit didnt go and he kept chewing and chaseing my betta. Took back the golden when he finaly peed me off compleatly by chasing everybody for two days affter I added a keyhole to the tank, and uthanised the dwarf chocolate in frustration when Id had enough of looking at him terrorising my beautyful betta to the point where he looked like a rag. I HATE gourami a lot.