Genicanthus angels are great reef safe fish with mellow and inquisitive personalities. They can be aggressive towards eachother if not introduced at the same time. You have to be real selective when picking them out. It's not uncommon for them to be a little beat up which they can recover from, but they do need to be swimming properly, not hiding, and eating of course. They'll adapt to bright lights, it is good to have some caves and what not to help them adjust.
I lost my male Watanabei after 9 months to a bacterial infection (I believe) that was created during a sandbed removal. I really miss that fish, the female is now the boss of the tank.