I got a betta from a LFS about a week ago that had been mistreated. He was really swollen and his fins were almost gone. Well, since I bought him I've been treating him with Tetracycline and all of his swelling has gone down. Now, I've noticed (only under certain lights) that it looks like he has a 'fuzz' on his back. It's not a thick cottony patch like fungus is always illustrated in books and such. The perfect way for me to describe it is - It looks like when a human has a sunburn and their skin starts peeling. When my betta starts swimming around in excitement you can see this stuff flaking off and floating around in the water. Is this a fungus? Today is his last day on Tetracycline. Should I do a 100% water change tomorrow then give him a couple of days and start an antifungal medication
Any help would be GREATLY appreciated. He acts perfectly happy. He swims around a lot-he doesn't scratch or shimmy or anything. He's eating like a little piggy and he's even blowing lots of bubblenest.
Again, any help would be perfect!!
Thanks.

Any help would be GREATLY appreciated. He acts perfectly happy. He swims around a lot-he doesn't scratch or shimmy or anything. He's eating like a little piggy and he's even blowing lots of bubblenest.Again, any help would be perfect!!
Thanks.


But what I would do is after his last round on tetracycline, do a 100% water change, give him a bit of aquarium salt and clean water, and leave him in that for a few days (to get the other meds out of his system, you don't want to stress him by pumping to many meds into his system) then after a few days start him on a round of maracyn 1 and maracyn 2 combined.