Well, I wish I had more, too... They were $15 each at New World Aquarium and I could only get two bcs of budget considerations (I had gotten some other rather expensive fish the same day). The other chromis didn't make it, and so I am left with only one. He is a pretty individualistic fish, though - feels pretty much "in his own waters" in my tank, and chases unrelentlessly after my Fiji Devil Damsel (which is the reason to let him go, the damsel is rather stressed). Two damsels is not a good number, so I'd rather be left with just one.
Size is about Inch and a half - may be more, I am not that good at gauging fish size.