The Blue Angelfish grows up to 9 inches and requires a tank of not less than 100 gallon. The Blue Angelfish is quite hardy in nature and its dietary needs makes it little difficult to handle. The Blue Angelfish mainly snacks over a small amount of algae, tunicates, and mostly feed on sponges. The Blue Angelfish is susceptible to marine ich, marine velvet diseases, that is why it should be quarantined when first received. The Blue Angelfish is important to feed it with all kinds of live, frozen, and prepared formula foods. The Blue Angelfish should be kept singly or in mated pairs, as it is highly aggressive species with a tendency to be combative towards its tank mates. The Blue Angelfish nips over the corals and clams and other sessile invertebrates that is why it is not considered reef safe. The Blue Angelfish is purplish to blue and makes a beautiful addition to any tank. It is found to harass other fish without discrimination, so it should be added last in the aquarium. If a specimen doesn't initially eat during acclimation, the Blue Angelfish can be enticed with live brine shrimp, ghost shrimp, and freshly chopped seafood.