This is a group of angels that get very large and, for the most part, aren’t reef safe. Although a number of people have been able to keep them in reef tanks, most will pick at corals, clams, and worms in the tank, so if you introduce one into your reef tank, they need to be carefully watched. For the most part they do very well in FO or FOWLR tanks, but they need tanks that are at least 6 feet or larger. They need to be fed a large amount of greens and meaty foods which will put a heavy load on a filtration system. This is a very large angel that can become rather aggressive over time and care needs to be taken when trying to mix it with other large angels. Small juveniles do very well, but they grow fairly quickly and need to be housed in a large tank. Smaller juveniles will do cleaning on larger fish. Queens and Blue angels are usually ich magnets so care needs to be taken with them. You can tell the difference between Juv Queens and Blue Angels by their bars: the Queen has curved bars while the Blue’s bars are straight.