The Flagfin Angelfish (Apolemichthys trimaculatus) is a striking and elegant saltwater species admired for its creamy yellow body, vibrant blue highlights, and distinctive black spot near the dorsal fin that gives it its “flag” name. Native to the Indo-Pacific, this semi-aggressive angelfish thrives in well-established aquariums of 100 gallons or more with plenty of live rock for grazing and shelter. While not always fully reef-safe, it can do well in carefully planned systems and benefits from a varied diet of high-quality angelfish preparations, marine algae, and sponge-based foods. With its bold coloration and graceful presence, the Flagfin Angelfish makes a stunning centerpiece for experienced marine hobbyists looking to add personality and beauty to their aquarium.
