Chaetodon melannotus, commonly known as the Blackback Butterflyfish, is a visually stunning species prized for its bold black and yellow patterning. This medium-sized butterflyfish reaches up to 18 cm in length and is best suited to experienced marine aquarists due to its specialised care needs.
Care Level: Moderate to advanced. This species requires stable water conditions and a mature aquarium setup.
Temperament and Compatibility: Generally peaceful but can be territorial towards conspecifics or similar species. Suitable tank mates include other peaceful fish of similar size. Avoid aggressive or highly territorial species.
Diet: Omnivorous. Provide a varied diet including high-quality frozen or live foods such as mysis shrimp, brine shrimp, and specialised butterflyfish preparations. Supplement with marine algae and sponge-based foods to mimic natural feeding habits.
Minimum Tank Size: At least 150 litres (approximately 40 US gallons) to provide sufficient swimming space and territory.
Lighting and Water Flow: Standard reef aquarium lighting is suitable. Moderate water flow replicates natural reef conditions and supports fish health.
Placement: Mid to upper levels of the aquarium, where it can swim freely and access feeding areas.
Origin: Indo-Pacific region.
Maximum Size: Up to 18 cm (7 inches).
Reef Compatibility: With caution. May nip at coral polyps and sessile invertebrates; not recommended for delicate reef tanks.
Regular water changes and maintaining excellent water quality are essential for the health of Chaetodon melannotus. This species thrives in a well-established aquarium with live rock providing natural grazing opportunities.
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