
Chelmon rostratus
Family: Chaetodontidae ยท Butterflyfish
Also known as: Beaked Coralfish, Beaked Butterflyfish, Orange Stripe Butterflyfish
The Copperband Butterflyfish is one of the most striking and sought-after butterflyfish species in the marine aquarium hobby. Characterized by its laterally compressed, disc-shaped body adorned with vertical copper-orange bands outlined in black, this species also features a distinctive elongated snout used for picking small invertebrates from crevices in the reef. A prominent false eyespot on the dorsal fin serves as a defense mechanism to confuse predators.
In the home aquarium, the Copperband Butterflyfish is highly valued for its ability to consume Aiptasia pest anemones, making it a functional as well as beautiful addition. However, this species can be challenging to maintain, as many individuals are reluctant to accept prepared foods. Patience and a variety of offerings including frozen mysis shrimp, clam on the half shell, and enriched brine shrimp are often necessary to establish a reliable feeding response.
This species requires a well-established aquarium with plenty of live rock for grazing and shelter. While generally peaceful toward other fish, it may nip at certain coral polyps, tube worms, and small invertebrates, warranting a cautious reef compatibility rating. The Copperband Butterflyfish is best kept singly, as conspecifics will often fight unless a mated pair can be obtained. Providing a stress-free environment with moderate water flow and stable parameters is essential for long-term success.
Copperband Butterflyfish are carnivores that naturally feed on small benthic invertebrates, worms, and Aiptasia anemones. In captivity, offer frozen mysis shrimp, enriched brine shrimp, clam on the half shell, and blackworms. Some specimens can be trained to accept high-quality pellets. Feed two to three times daily in small portions.
The Copperband Butterflyfish is peaceful with most tankmates but should not be housed with other butterflyfish unless in a very large system. It may nip at feather duster worms, small fan worms, and some LPS coral polyps. Compatible with most community reef fish, though aggressive species may stress it and prevent feeding.
Check CompatibilityCopperband Butterflyfish have not been successfully bred in home aquariums. They are pelagic spawners that release eggs into the water column at dusk. The tiny larvae require specialized planktonic foods and conditions that are extremely difficult to replicate in captivity.