I'm not putting a tang in a 45 because it's only 3 feet long. Years ago I had a beautiful, big and plump yellow tang that I really miss. Some eon or other when I manage to get a 75, I will get another yellow tang. I believe they are my favorite fish even before clowns. For right now, I have to settle for something smaller.
Damsels are out of the question, except maybe chromis. I wonder how many would go in my tank for a little school, if its them, the clowns, the dottyback, and planned yellow watchman goby. Whatever it is, that would be it for the fish.