IME, their care is about the same as Bartlett's and Bicolors. They aren't too particular about their food, though my staple with most Anthias has been PE Mysis soaked in Selcon. Feed at least twice a day. As you can tell by their shape, they're very fond of swimming and darting about. They are very fast so leave yours lots of room. Leave it a few good hiding places too as they aren't as aggressive as some other Anthias and can be bullied.
These guys are very, very hard to come across in the hobby. They come from the Cook Islands where it seems almost everything else is more colorful. I had a shoal of 6 several years ago and only 1, a male, remains today. I'd love to find more but I guess I'll have to assemble them through misidentification like you did. Good luck.
