The Half Black Angelfish is a striking Indo-Pacific dwarf angelfish known for its bold tuxedo-like coloration, active personality, and surprising hardiness. Native to coral-rich reefs from Indonesia to the Great Barrier Reef, this semi-aggressive grazer reaches about 4 inches and thrives in mature marine aquariums with ample live rock and stable water conditions. With its dramatic two-tone pattern, constant movement, and fascinating natural behaviors—including the ability to change sex in the wild. This species offers both beauty and intrigue for aquarists seeking a vibrant, personality-filled addition to their reef system.