This is one of those heartbreaker fish. they are easy at first, they usually eat well and seem very hardy but are very difficult to do long term. It usually takes a few months but they invaraibly go downhill. Almost all of the large angels that get biopsied have at least 90% sponge in their stomachs, and many of them 99% sponge but most of the others can transition to other foods quite nicely. Not the RB, and it seems that without their natural diet they cannot thrive. They have two other disagreeable habits as well; they are usually quite mean, and they often clean other fish as juveniles and will pester some fish to death. I had a pretty knowlegable LFS guy tell me they are easier than Red Sea regals, moorish idols, and flagfins but I disagree, I know a few people who have kept those for years but I have never met anybody who has kept a RB for even a year. It a shame because an adult in full color and health is a breathtaking sight.
