You will be taking a chane they need large tanks for swimming in 75 or greater and have
poor survival rates in an aquarium less than 6 months after introduction.They may also nibble at soft corals. They are sensitive to metals in the water ie copper .
They are labled as difficult care on what I could find but I would skip it imo.I am not sure if others will have in put but this is my opinion good luck
I say to stay away from all angels in a reeftank, they are just too unpredictable when it comes to coral biting. I also think a nano is just too small for angels. JMO, Skip