International Aquatics
Muelleri Butterflyfish
Muelleri Butterflyfish
🛡️ International Aquatics Quarantine & Guarantee
All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. For size preference please add a note on your order and we will match your fish to your requested size. If you just want the fish without our QT process, Please email us directly with your order number. Please note this does waive the 15 day guarantee.
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Muelleri Butterflyfish (Chelmon muelleri) is a peaceful species that is considered reef-safe with caution, admired for its subtle golden body, silver base tones, vertical dark bands, and elongated snout which it uses to pick at small invertebrates in rock crevices. It is a close relative of the Copperband Butterflyfish but is less common in the trade.
Males typically grow slightly larger with a more elongated body shape, while females/juveniles are smaller and display softer, less contrasting coloration. They reach about 7 inches in adult size and should be housed in aquariums of at least 100 gallons, allowing enough room for swimming and foraging.
Provide an environment with live rock, caves, and plenty of open swimming space, as well as hiding spots to help reduce stress. Maintain stable water parameters (salinity ~1.020–1.025, temp ~72–79°F, pH ~8.1–8.4) and use a secure lid, since they can dart quickly when startled.
Diet should consist of mysis shrimp, enriched brine shrimp, copepods, finely chopped seafood, sponge-based foods, and high-quality pellets. They may also graze naturally on worms and small invertebrates within the tank. With proper care, the Muelleri Butterflyfish makes a unique and elegant addition to larger aquariums, especially for aquarists looking for a rarer alternative to the Copperband.
International Aquatics Quarantine & Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.
Several species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.
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