I'm not comfortable with common names, so I can't say for sure what you're referring to. Purple Queens (P.tuka) are terribly difficult to keep alive in captivity. You may be seeing a female specimen, which differs remarkably from the males usually photographed. I'm not sure what species Hawaiian anthias refers to. Perhaps P.hawaiiensis (or P.ventralis hawaiiensis as some taxonomist prefer). It's a completely different looking species, so I'm not sure we're talking about the same fish. Try to find a pic that closely matches the specimen in your LFS, and I can ID it from there.
In any case, anthias require constant feeding - 2-3 times a day. Don't buy one unless you can devote that kind of care. Plus, the two species aforementioned are hard to husband. I'd stay away from them unless you're very experienced with anthias care.