Species Description…

Scientific Name: Chelmon rostratus

Common Name: Copperband Butterflyfish

Species Group: Butterflyfish

Habitat: Reef Safe with Caution

Care Level: Advanced

Temperament: Peaceful

Diet Type: Carnivore

Role in Aquarium: Showpiece Fish

Max Fish Length: 8 (inches)

Min Aquarium Size: 125 (gallons)

Native Range: Indo-Pacific, from the Andaman Sea to Australia and the Great Barrier Reef

Chelmon Rostratus - The Copperband Butterflyfish

Chelmon Rostratus (The Copperband Butterflyfish)

Native to the Indo-Pacific, commonly found in coral reefs, lagoons, and shallow coastal waters.
Distinguished by its long, slender snout and striking vertical orange bands on a silver-white body.
A peaceful species that requires careful acclimation and a well-established tank for long-term success.
Often found alone or in pairs in the wild, preferring areas with abundant coral growth.
Best suited for an advanced aquarist due to its specialized dietary needs and sensitivity to environmental changes.

Carnivorous, primarily feeding on small invertebrates, worms, and crustaceans in its natural habitat.
In captivity, it requires a diet consisting of live or frozen mysis shrimp, blackworms, and enriched brine shrimp.
May be slow to accept prepared foods, making it essential to offer a variety of fresh and frozen options.
Multiple small feedings per day ensure proper nutrition and digestion.
A protein-rich diet is crucial to maintaining its health, vibrant coloration, and immune system strength.

Prefers coral reef environments with moderate water flow and plenty of rock formations.
Frequently found near reef edges and rocky outcrops where it forages for food.
Aquarium setups should include live rock to support natural grazing behavior and hiding spots.
Requires pristine water conditions with strong filtration to prevent stress-related diseases.
Providing shaded areas alongside open swimming spaces encourages a more natural lifestyle.

Optimal water temperature: 74-80°F (23-27°C) to maintain overall health.
Preferred pH range: 8.1-8.4, with a salinity level of 1.020-1.025.
Requires stable water parameters and frequent water changes to ensure longevity.
Reef-safe with caution—may nip at tube worms, feather dusters, and small invertebrates.
Providing a well-structured aquarium with hiding spots reduces stress and encourages natural behaviors.

Generally peaceful and best suited for community tanks with other non-aggressive fish.
Compatible with tangs, wrasses, gobies, and other peaceful reef fish.
Should not be housed with aggressive or overly competitive feeders.
May be kept with other butterflyfish if introduced carefully, but can be territorial with its own species.
Providing plenty of swimming space and hiding areas helps reduce stress and potential aggression.

A shy and cautious species that takes time to adjust to new environments.
Often observed exploring rock formations and searching for small invertebrates to eat.
Becomes more confident when housed with peaceful tankmates.
Providing live rock supports natural foraging behavior and helps maintain its health.
Over time, it may recognize its caretaker and respond positively, especially during feeding times.