I went back & looked at Scott Michaels' Butterfly & Angelfish book.
Some other choices could be made, though I noticed many were VERY expensive fish. There are a few Genicanthus angels, also some of the Singapores cousins, like Scribbleds might work. Blueline would be doable but would probably get aggressive in a 90 gallon. Others in the Genus there are smaller than Pomacanthus, thus you aren't stuck with Centropyge ONLY.
But in a 90 gallon you don't just have to keep one Centropyge species, if you are careful. If I had your tank, I'd have the CB & probably a Flame.
Matthew
Some other choices could be made, though I noticed many were VERY expensive fish. There are a few Genicanthus angels, also some of the Singapores cousins, like Scribbleds might work. Blueline would be doable but would probably get aggressive in a 90 gallon. Others in the Genus there are smaller than Pomacanthus, thus you aren't stuck with Centropyge ONLY.
But in a 90 gallon you don't just have to keep one Centropyge species, if you are careful. If I had your tank, I'd have the CB & probably a Flame.
Matthew