is a genus of fish in the family Pomacentridae
. While the term Damselfish
describes a group of marine fish larger than just one genus, most damselfish are in the genus Chromis
. These fish are popular aquarium pets due to their small size, tolerance for poor water quality, and bright colors.
and see this.... Blue-green Chromis, Green Chromis, Chromis viridis
How many did you start out with. It is true sometimes that that dominant male will kill off others sometimes. Mostly, they do fine in a group, but I have had them die one by one. Started with 5 and ended up with 3.
Are you cycling with them by any chance?
Consider cardinal fish or scissor tail gobies as they are both very easy and peaceful fish that school well also. Chromis never seemed to last too long IME.