Copperband Butterflyfish (Chelmon rostratus)
Reef Compatible – With Caution
Care Level – Intermediate
Disposition – Peaceful
Min. Tank Size – 50 gallons
Mature Size – 8 inches
| Size | Minimum Tank Size | Mature Size |
|---|---|---|
| XXL (5″ and above) | 50 gallons | 8 inches |
FAQ
Is the Copperband Butterflyfish safe to keep with other reef fish?
It is reef compatible with caution. Some species may be targeted due to its appearance, so careful selection of tank mates is advised.
What is the expected growth rate of this fish?
The fish reaches a mature size of 8 inches, typically growing over several months in a properly maintained tank.
Is this fish suitable for beginners?
No, this fish requires intermediate care and a minimum tank size of 50 gallons, making it more suitable for experienced aquarists.




Joanne Terry –
The fish is active and colorful. I’ve kept it in a 55-gallon tank with corals, and it’s peaceful. Only one small snail was eaten, but otherwise it’s well behaved. Needs a stable environment and regular feeding.
Benjamin Ogden –
Looks beautiful in the tank. I was cautious about adding it to a reef setup, and it hasn’t attacked any corals. Feeding it daily with frozen shrimp works well. A bit shy at first but settles in after a week.
Wendy Newman –
Great addition to my marine setup. The fish is vibrant and stays calm. I monitor the tank closely, especially during feeding, to avoid any accidental contact with sensitive corals.