Alyssa, there is RX for fish in with all my other fish stuff...and I *think* there's a bowl big enough for him... (she's not kidding guys, he is HUGE!!)

Separate him from the others and try some Zeemax...that's the only thing I can think of at the moment. Have mom read some of the other Rx's to see if he fits any of the descriptions. **Sounds like he has a bit of a fungus combined with something else... I also have some Pepso Food you can try on him...use it SPARINGLY...

Wish I were there to help!