The pomacanthus imperator, or emperor angelfish, is of the salt water variety and a favorite amongst angelfish hobbyists. Known for their brilliant blue and yellow stripes, as well as size (up to 15” in length), 70 species of this reef-associated fish inhabit the warmer waters of the Pacific and Indian Oceans.Resembling the butterfly fish, adult emperor angelfish have a roundish profile and flattened bodies, with a white snout, purple-black mask around the eyes, and a yellow tailfin.