I was on vacation for a week and my parents were feeding my fish. When we cam back my tusk was slowly moving around the top of the tank and just acting weird. On Sunday he ate four claims but that was the last time he ate. I tried a fresh water dip because I have had an issue with flukes six months ago and my lfs advised I start with that and treat the tank with Prazipro. This morning he look way worse and his fins are starting to rot away. I appreciate an help I can get. Tank is 300gal and he is the only sick fish. I did treat with prazipro half dose.