This is info from WWM:
Like doug said, here is their info;"Chrysiptera taupou (Jordan & Seale 1906), the Village Belle or South Seas Devil. Southwestern Pacific Ocean. A great beauty and relatively non-aggressive. A very nice addition as an individual specimen to reef aquariums; where this one was photographed. To two and a half inches in length."
This is also sold as a Blue Devil Damsel (the probelm with common names I guess).
From WWM,"Chrysiptera cyanea (Quoy & Gaimard 1825), the Blue Devil/Damsel. Likely the most commonly used member of the Damsel family by the aquarium interest. Western Pacific over to the bare eastern edge of the Indian Ocean. To two and a half inches in length. Variably blue with some orange yellow on fins. Aquarium specimens shown below."
you apparently have C.tapou.
FWIW here is what an azure damsel is: