I knew it, its a pimple!!!Rockbass6;1457231; said:It should be fine I had a pike cichlid that had that. (not the one in my avatar) I think it comes from poor water quality. Make sure your keeping up on your water changes because oscars produce LARGE amounts of waste. I did a water change, raised the temp, and added salt just like ich treatment and it was gone in a week or two. It always had a mark/scar on its lip from after that though. Its like a pimple, nothing major.