Green Chromis questions

[ed99]

I think that would explain what I saw. When first added to the tank the chromis schooled, and when I added additional chromis to the tank the new ones quickly joined the ones that were already there. Then after a few days it was everyfish for himself.

I have another question- while watching my chromis closer than usual lately I noticed one has some patchy spots on his scales, mostly near the top of this body but also in other spots as well. It's not like ich, more like a the colour has faded on some of the scales as it follows the scale patterns. Sound familiar to anybody?

Thanks,

Ed