One thing I always say is that there are no angelfish that are hard to KEEP, only those that are hard to ADAPT. Centropyge multifasciata is one such species... and while the age of the tank is often brought up, I believe perhaps much more important is the experience of the hobbyist. I believe we as hobbyists have a moral obligation to only attempt species such as this if we have years of experience in quarantining and adapting other more easily adapted species. I am very often in the situation where people ask me about my quarantining/adapting regimens as people want to start following some sort of protocol other than the "dump and hope approach" that most reefers do... this is a great step that many people make, but too often people cut their QT teeth on species that are either tough to adapt or expensive, and it often doesn't turn out well... this would be the equivalent of a novice reefer starting with a full blown sps or nps tank... and as we all know with reef tanks there is only so much you could learn from reading... it is like riding a bike... you could read books for a year on riding a bike, yet you would still take a while to figure it out when you got on. Species like this are often tricky to adapt and condition, but with skill, luck, and a combination of the two, these fish could thrive in established reef tanks...
I've had my Marshall Islands pair for a few years now... previously I kept an Indonesian specimen for nearly five years... these guys are kept to the 60 gallon right third of my 180 gallon sps display... the male of my Centropyge colini pair (an equally hard to adapt species) keeps them there, but they've found their niche. This species is spectacular... the black and white contrast is like a zebra or California kingsnake... the black could not be blacker and the white not whiter... combine that with the yellow the species displays ventrally and they are quite a site... and if adapted well before introduction these fish do not require a quiet tank as is often said... my pair is in a reef loaded with different species and they are paid no mind... except for the closely related Colin's angel pair as I said... which comes in the form of the male Colin's showing the multibars who is boss a few times a day... there are a few other species of Centropyge (and larger angelfish genera) that leave the multibars alone.
Here are a few shots of my pair...
Copps