anthias are another option, but are larger and can be more difficult to feed.
one reminder about chromis, they need a minimum of at least 6 (or 7 depending on what literature you are reading) to school and to be peaceful towards each other. if you have less they tend to kill each other off. i tried to just have 4 and all i ended up with is a single large male. now i have 9 and they all seem to get along peachy with each other. hth.