The Copperband Butterflyfish (Chelmon rostratus) is one of the most striking saltwater fish in the hobby, known for its bold orange and white stripes and graceful swimming. While beautiful, this species is also a challenge to keep—requiring a mature reef tank, careful feeding, and plenty of live rock to thrive. Learn how to care for Copperband Butterflyfish, from diet and tank setup to compatibility and reef safety, in our complete guide.