sick clowns

[spafeature]

Hi,
Noticed the other day my perc looked like he had been bitten or burned--now area is puffy and white (not little spots one big spot) and most of dorsal is missing. Same type of thing is happening w/another one of my percs only on bottom. THird perc looks like a bite was taken out of its tail, but else seems fine.
Everyone else in tank is doing great an ph, trates, trites and ammonia are all fine.
Any ideas?

 

[bigarn]

What are the other inhabitants in there?
With 3 percs it could be a dominance thing. If so, it's not good ..... one's going to end up dead.

 

[spafeature]

Other inhabs--Cleaner Shrimp, 1 yellow tang (sub), 1 purple tang (dom), 1 sand sifting goby, 1 sand sifting star.

 

[ctgretzky9]

Agree with bigarn
3 perc=trouble.

 

[spafeature]

I never see them fighting--could larger one has puffy white fungus stuff on it---is it healing or desease?