Description
Copperband Butterflyfish – Chelmon rostratus
Chelmon rostratus, commonly known as the Copperband Butterflyfish, is a distinctive marine species recognized for its vertical copper-orange bands, bright white body, and elongated snout. Known for its calm, deliberate movement and natural foraging behavior, it adds elegance and function to marine aquariums, particularly for its ability to help control pests such as Aiptasia.
Native to the Indo-Pacific, this species thrives in established aquariums with ample rockwork and stable conditions.
Lighting: Moderate; adapts well to standard marine lighting
Flow: Moderate; benefits from stable, well-oxygenated water movement
Placement: Midwater swimmer with access to rockwork for foraging
Temperature: 75–80°F (24–27°C)
Salinity: 1.0265 SG (35 PPT)
pH: 8.1–8.4
Alkalinity: 8–10 dKH
Diet: Carnivorous; requires a varied diet including mysis shrimp, brine shrimp, and prepared foods—feeding acclimation is important
Aggression: Peaceful; generally non-aggressive toward tank mates
Adult Size: Up to 20 cm
Care Level: Intermediate to Advanced – can be sensitive during acclimation and feeding
Compatibility: Reef-safe with caution; may consume tube worms and small invertebrates
