I have something similar -- for a while it was thought to be a blue color morph, but is now thought of as a separate species -- and I have found it similar to other dwarf angels.
Loves to nip at the live rock all day long, so does better in a mature tank.
Will sample most corals -- LOVES fleshy LPS -- and will go after stressed ones very quickly. Case in point, would nip at zoas from time to time, but no real damage. Well, my blue spotted puffer/toby started going after some zoas with gusto, the dwarf would finish them off.
Overall it is a mellow fish, it doesn't start anything, but isn't a wimp either. Think it is a great fish and very happy that I have one.