I wouldn't recommend putting those two Centropyge angels together in such a small tank. I'm sure there are those for whom it's worked fine, but I've plenty from others for whom it did not.
Ironic.
Today I went to purchase a flame angel and a coral beauty that I have been watching every now and then at my lfs for 2 weeks in the same tank. I've had great success with a coral beauty before, until he jumped out of the tank and passed away on the floor before I noticed. The flame angel and coral beauty seemed to get along well in the lfs tank together, along with another angel type. Today, cash in hand (a fair whack of it ) I was ready to take them home. The flame angel was swimming upside down in the lfs tank! I came home empty handed.
Recently I had to quarantine my coral beauty so for the time being I just put him in my 30 gal with my potters. I figured that it wouldn't be very long so I'd just give it a try. Within minutes of putting them together they starting fighting!! My coral beauty ended up with a small scratch on his side. With that said, I don't think I would recommend putting two angels together unless you had a relatively large tank. :wink: