not Oodinium. Could be a bacteria infection. If you are feeling gutsy, take a large bowl that will fit a gallon of tank water. Buy some melafix, which treats most bacterial infections, and dose the water with the directed dose. Leave him in there for about 10 minutes. Return him (without the water) back to the tank and repeat that process daily for a week (if he lives). I swear by it.
-Dr Marco :sfish: