There are several good books that cover anthias and wrasses, Scott Micheal's reef fishes has a volume that covers anthias and his volume on wrasses is supposed to be out in the fall of this year. Kuiter has a volume on wrasse and one on anthias as well, but they are more of photo guide to species rather then aquariest manuel as the care section is very limited. You can also look at general marine books, there are several that contain good info on both groups.