Hybrid anem ? lol, umh rbt rose bubble tip and bta, bubble tip anems are just differnt color morphs of the same species ,"local variation". Just like most of the deeper water ones tend to be solitary and the shallow water ones tend to to be colonial critters.
He may well have aquacultered these but, they should still have zoolanthe as both of their parents do. As far as I know every other member of their immediate family also has zoolanthe.
I hope the proceeding paragraph is incorrect and you lfs guy is correct but, I don't think so. You can keep it quite happy with regular feedings as you're doing and hope that it colors up again ,"it probably won't ime."
Anyway not trying to argue with you or anything like that.
good luck and keep us posted.
** edit** how long have you been dealing with this store? I've seen a lot of bleached anems being sold as something special. Again I hope that's not the case here but, you need to know as your husbandry will have to be different.
You will have to keep your water absolutly pristine. Also it has no way to produce foods from organic material in the water and, as I allued to earlier the symbiotic algae help it recycle nutrients ,"remove waste products," from it's body.