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Copperband butterflyfish (Chelmon rostratus)
AI illustration, not an ID reference

Copperband butterflyfish

Chelmon rostratus

FishSaltwater

Care level
Demanding
Temperament
Peaceful
Reef safe
With caution
Recommended tank
400 L
Maximum size
20 cm
Temperature
24–27 °C
pH
8–8.4
Diet
Carnivore

Care at a glance

The copperband butterflyfish is silvery white with copper-orange bars and a long, thin snout with which it probes crevices and holes for worms and small crustaceans, like a pair of tweezers. It is often bought to clear up aiptasia, but whether it does so varies a great deal per individual.

It is sensitive and awkward at feeding time: many individuals refuse everything at first and need live or fresh food to get started. So pick a specimen you can see eating in the shop, put it in a large, richly grown reef tank, and note that it may pick at feather duster tubes and clams.

Good to know

  • Needs a mature, stable tank
  • Hard to wean onto dry food

Related species

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Values are mainstream hobbyist guidance, not gospel — always watch what your own animals need.