Copperband Butterflyfish (Chelmon rostratus) Introduce unmatched elegance and a critical reef utility to your aquarium. The Copperband Butterflyfish is a breathtaking species instantly recognized by its tall, disc-like silver body adorned with four brilliant copper-orange vertical bands, a vivid false eyespot on its dorsal fin, and a spectacularly elongated, needle-like snout. Watching this graceful fish delicately hover and slide through tight rockwork channels adds an artistic, high-end aesthetic to any large marine display. Beyond its undeniable beauty, the Copperband is celebrated globally as the premier biological weapon used to eliminate invasive, stinging glass anemones from marine ecosystems. Quick Care Specifications Care Level: Advanced / Expert (Due to initial feeding habits) Temperament: Peaceful (Completely passive) Maximum Size: 7 to 8 inches in captivity Minimum Tank Size: 125+ Gallons Reef Compatibility: Reef-Safe with Caution (Safely clears pests; may nip at clams, feather dusters, or some fleshy LPS corals) Water Parameters: 72–78°F, pH 8.1–8.4, dKH 8–12, Salinity 1.020–1.025 SG Key Features & Tank Requirements 🪓 The Ultimate Aiptasia Hunter Equipped with a highly evolved, forceps-like snout perfectly designed for reaching deep into tiny rock crevices to pluck out and destroy invasive Aiptasia (glass anemones) and majano anemones before they can sting and take over your corals. 🥩 Finicky Eater Assistance Copperbands can be notoriously shy, stubborn feeders when first introduced to a new aquarium. They require a patient hobbyist who can offer specialized, high-protein foods to trigger their feeding response. Offering live blackworms, frozen mysis shrimp, and frozen clams on the half-shell is highly recommended to successfully acclimate them. 🐚 Invertebrate Selection Notes Because they naturally hunt for small benthic organisms, they will quickly consume decorative feather dusters, tube worms, and small Christmas tree worms. While they are safe with the vast majority of SPS and soft corals, underfed specimens may occasionally nip at the mantles of Tridacna clams or fleshy LPS corals. 🤝 Peaceful Community Demeanor Remarkably docile and completely non-aggressive toward other fish species. Because they are slow, deliberate feeders that can be easily startled, avoid housing them with hyper-aggressive tank mates or fast-moving eaters (like large tangs or wrasses) that will outcompete them for food during acclimation. 🛡️ Stable, Mature Aquarium Environment Thrives best in an established, well-oxygenated reef system with plenty of open swimming pathways flanked by complex live rock structures. They require excellent water quality and a low-stress environment to truly flourish and maintain their vibrant orange coloration.
