I am in the process of doing my own research on this matter but I figured I would post a thread first so I can get this issue resolved asap.
I recently purchased two tomato clownfish (from John Auberry) and they have been doing wonderfully...until the other day I noticed that the 'female' (larger one) has what looks to be a fuzzy white growth on her 'chin' right underneath her lower lip (kinda like a goatee...lol). The clownfish are from Steve a long time ago so they are aquacultured. I will get a pic as soon as I can...don't hold your breath though, I am terrible at taking pictures of the tank!
Alright, I am off to research---thanks for taking the time to look!