Yes you can. You're going to need 100+gallons and lots of live rock unless you get a male/female. But there's no external sexual differentiation so good luck.
" All Coral Beauty Angelfish are born female and can be paired according to size, not necessarily color. The larger fish becomes male, so making a pair is possible by buying a larger Coral Beauty and a smaller Coral Beauty, and within a few months hopefully they will assume their roles as male and female. Dwarf angelfish will spawn in captivity and some are now being raised, yet raising the larvae is quite a difficult task."