Blackback Butterflyfish Care Guide
Chaetodon melannotus · Saltwater Butterflyfish
What Blackback Butterflyfish look like
The Blackback Butterflyfish (Chaetodon melannotus) exhibits a striking coloration characterized by a predominantly yellow body adorned with a prominent black dorsal fin and a distinctive black patch on the upper part of the body, near the head. Its maximum adult size reaches approximately 7 inches (18 cm) in length. Sexual dimorphism is subtle, with males typically displaying slightly larger dorsal fins. This species possesses a laterally compressed body, which aids in maneuverability among coral structures. The mouth is small and equipped with specialized dentition adapted for feeding on small invertebrates and coral polyps. The presence of a lateral line system enhances its ability to detect vibrations in the water, crucial for navigating its reef habitat.
Behavior & temperament
Chaetodon melannotus is generally a social species, often found in pairs or small groups, exhibiting a hierarchical structure within its social interactions. It predominantly occupies the upper levels of the reef, where it forages among coral heads. Breeding behavior involves courtship displays, where males perform elaborate swimming patterns to attract females. The species is known for its relatively mild temperament, although it can exhibit territorial aggression when defending its nesting sites against intruders. During feeding, it utilizes a pecking motion to extract food from coral surfaces, showcasing its specialized feeding adaptations.
Diet & feeding
In the wild, the Blackback Butterflyfish primarily feeds on coral polyps and small invertebrates, making it an obligate corallivore. In captivity, it requires a varied diet that includes high-quality marine flakes, frozen foods, and live foods that mimic its natural diet.
Behind the name
The scientific name 'Chaetodon' derives from the Greek words 'chaite' meaning 'hair' and 'odon' meaning 'tooth', referring to the bristle-like teeth of these fish. The species name 'melannotus' comes from the Greek 'melas' meaning 'black' and 'notus' meaning 'back', describing the fish's distinctive black dorsal region.
Plan your tank
Check the numbers before you buy: tank volume, salinity, salt mix, water changes, and your ongoing care routine.
Keeping Blackback Butterflyfish?
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