Species Description…

Scientific Name: Chaetodon melannotus

Common Name: Blackback Butterflyfish

Species Group: Butterflyfish

Habitat: Reef Safe with Caution

Care Level: Intermediate

Temperament: Peaceful

Diet Type: Omnivore

Role in Aquarium: Showpiece Fish

Max Fish Length: 6 (inches)

Min Aquarium Size: 75 (gallons)

Native Range: Indo-Pacific

Chaetodon Melannotus - The Blackback Butterflyfish

Chaetodon Melannotus (The Blackback Butterflyfish)

Native to the Indo-Pacific region, commonly found in coral reefs, lagoons, and coastal waters.
Recognized by its silver-white body adorned with fine black stripes and a distinctive black patch on its upper back.
A moderately hardy butterflyfish that requires a well-maintained environment to thrive.
Typically observed in pairs or small groups, often seen swimming near coral-rich areas.
Best suited for experienced aquarists due to its feeding habits and sensitivity to water quality.

Omnivorous, feeding on coral polyps, algae, and small invertebrates in the wild.
In captivity, it requires a diet rich in sponge-based foods, frozen mysis shrimp, and marine algae.
May take time to adapt to prepared foods, so a slow introduction is recommended.
Frequent small meals throughout the day help maintain energy levels and proper digestion.
A varied diet is essential for maintaining its coloration and long-term health.

Prefers coral-rich environments with moderate to strong water movement.
Often found near reef slopes and rocky outcrops where it can forage for food.
Aquarium setups should include live rock to encourage natural grazing and provide hiding spots.
Requires stable water conditions with high-quality filtration to prevent stress.
Providing shaded areas and open swimming spaces allows for a comfortable habitat.

Optimal water temperature: 74-82°F (23-28°C) to support metabolic health.
Preferred pH range: 8.1-8.4, with a salinity level of 1.020-1.025.
Requires frequent water changes and a stable environment to prevent disease.
Not considered reef-safe, as it may graze on soft corals and sessile invertebrates.
Providing live rock enhances natural grazing opportunities and reduces stress.

Generally peaceful but may become territorial toward other butterflyfish.
Compatible with tangs, angelfish, and other non-aggressive marine fish.
Not ideal for reef aquariums due to its tendency to nip at corals.
Should be housed with similarly sized fish to avoid bullying or competition for food.
Providing sufficient space and defined territories helps maintain harmony in the aquarium.

An active species that enjoys exploring its surroundings.
Frequently observed grazing on rock surfaces and interacting with tankmates.
May take time to adjust to captivity but becomes more confident over time.
Providing live rock encourages natural foraging behavior and keeps it engaged.
Over time, it may recognize its caretaker and show increased curiosity, particularly during feeding sessions.