Purple lyretail Anthias

I have a female squareback anthias for a few weeks now. At my LFS they told me he was really hardy, not aggressive and ate on a regular schedule. Then I did some research after I bought him and found what I was told is not entirely true. But so far he has been really cool to watch. He comes up to the glass, eats alot and very fast.
I added a Christmas wrasse a few days ago but haven't seen him yet so I don't know if the Anthias has anything to do with it. Also I'm not sure if the Lyretail is similar to the squareback. Good Luck.