I acquired mine back in January 2005 with adult coloration (perhaps 3"?). I would say he is now 4.5 - 5". His pectoral fins have elongated dramatically during this time, although I would say he has increased in length dramatically (in girth, yes

).
A varied diet is imperative, especially sponge and vegetable matter.
He is fed Hikari mega marine angel first thing in the morning (most other fish don't care that much for it, and won't challenge him) and he has access to a seaweed clip all day. He is then fed a mixture of mysis, silversides, krill, cyclops, shrimp, squid, spirulina enhanced vrine, and more mega marine angel later in the morning and in the evening. He spends a good time hunting the rocks, and I presume he is hunting copepods and amphipods.
The following is a video of my Majestic Angel and a Powder Blue Tang feeding on seaweed clip.
Quicktime video
The importance for success with these fish is that they at least feel (in part) like it is their tank. He does not bully the PBT, but he doesn't bow to the PBT's aggression either (see video).
Extensive (and I mean extensive) rockwork is also a must. I have a large amount of rockwork in my 125gal. The rockwork runs as a ridge down the center of the tank, creating enough space for a fish to swim behind the rocks in a straight line from one end to the other. The back of the tank is blacked out. This is their part of the tank. Majestics can spook easily, and this is his retreat from more active, open water swimmers.
I have found this fish loves overhangs (the lower the better, oddly). In the rockwork are three caves completely surrounded on the top and sides with the front and back open. The tightest fit is his favorite.
Once established, I have found this fish to be remarkable hardy and disease resistant *knocks on wood*, being the sole survivr of a Brooklyenella outbreak that killed every other inhabitant in an older system, plus undergoing not one, not two, but four tank transfers in as many years after arriving in my custody.
Matt
