Hi all posted a while back about my pbt. Been in the tank for about a year.. pretty sure it is not ich.. I can't get him out to do I dip.. so I have been treating it with prazzi.. doesn't seem to be working.. is this a parasite.. maybe anchor worms.. it totally looks like he has hair.. my other a couple of my other fish are gettting it.. what else can I try.. I have no corals or inverts.. thanks