Purple Tang - what's this?

[bkelly]

mine has done the exact same thing i had recently done a tank move and he got stressed and was fighting with my other tang the purple would lose its colour look beat along his side, i removed the other tang and feeding lots of vegetables and garlic soaked frozen, it seems to be better as the stress decides and he strengthens - he also got one foggy eye that also is clearing. i gave it time instead of trying to remove him and treat, also tried to let the tank settle in for him,. that was just my situation for the same symptom. he had been healthy for years before this.