Masked ButterflyfishHeniochus monoceros (Mask Bannerfish Unicorn Bannerfish) is a striking, open water butterflyfish relative known for its bold black and white bands, yellow accents, and elegant trailing dorsal filament. Its an active, display focused species that brings constant movement and personality to larger marine aquariums, often spending its day cruising mid water and interacting with its surroundings. With the right setup and a steady feeding routine, it can