i have kept MANY of them over the years. not difficult per se . but chromis like for me. groups narrowing down to a few pairs here and there. will die for no obvious reason. seem to be inconsistent in how they ship/handled.
Yeah I read about the high mortality rate that is why I planned to get 10 or so. I understand also that in order to have fish shoal you need to have other fish that they will perceive as an aggressor.
I think Saltwateraquarium.com sells them sometimes, currently out. Zoramia leptacantha
There ok big mouth blue eyes. Personally I wouldn't want more than two. I usually like pairs vs three. What size tank and what fish will be the predators?