Please help with my new interruptus. He has these marks on both sides of his head, although one side is worse than the other. I have had this fish in QT for 5 ½ weeks now and all has been going great until I notice these marks. Almost looks like something is eating his skin. When I first got him, he was in CP (yes, the pure kind, I got a script from my vet.) for 3 weeks then transferred to a different clean cycled QT tank. Once in there I dosed with General Cure and redosed 48 hours later as per instructions. Did water change and added carbon. I start seeing these marks so I dosed Prazi-Pro as I was out of General Cure thinking maybe it had flukes and didn’t get them all the first time wih General Cure. Did water change after that treatment and marks are getting bigger and worse. Today I did a FW dip, but fish pooped in water so I could not see if anything came off. Fish is currently in a different clean uncycled tank. There is also what looks like strings hanging on his bottom fins Any ideas? Is this maybe spots where a parasite has come off? Should I dose with antibiotics? Please advise me what to do next. Thanks