Saltwater Angelfish are major showpieces in a large saltwater aquarium. Angelfish may be territorial. It is best to have only one to an aquarium. Saltwater Angels are not typically considered to be reef safe.They will often eat the polyps from a coral and they may also eat any live sponges. Saltwater Angelfish diet consists of microalgaes, macroalgaes, sponges, and zooplankton. I feed them pellets and they adapt to captivity very well. Foxy Saltwater Tropical Fish offers queen angels, blue angels, french angels, and the black angel at all sizes 1 1/2 up to 8 inches.