We hardly see them here on the West Coast. I think I've seen them only a few times here. Interesting species, but I've never had one, and quite frankly, wouldn't be able to keep one in my tanks since they grow to a fat 12 inches. I'm assuming yours are juveys?
I had a couple a few years ago from a carib supplier, but failed to keep them even tho they ate well on a couple dif occasions, and nobody really seemed interested in them so I haven't tried again.
They're about two inches now. I got them for a big FO show tank due to their interesting schooling behaviour. It took a few days but they seem to be settling in and eating in their stock tank.