Purple Moon Angelfish - Pomacanthus maculosusPurple Moon Angelfish (Pomacanthus maculosus) The Purple Moon Angelfish is a striking large marine angelfish admired for its rich blue purple body, bold yellow mid body band and elegant adult finnage. Juvenil . es look quite different, showing darker bodies with curved blue and white striping, which makes this species especially interesting as it matures. Native to the Red Sea, Persian Gulf, Gulf of Oman and wider western Indian Ocean, it is an