I think this is pretty serious. I finally got a picture today, but this has been going on for more than a week. I have just finished using melafix and it did nothing. He goes to the top of the tank every 1-5 minutes for air. It appears that the bottom of his mouth is completely missing!

Sorry for the poor picture. I have circled the where the problem appears.

Sorry for the poor picture. I have circled the where the problem appears.