Blackback Butterflyfish

The Blackback Butterflyfish is a distinctive and moderately hardy species recognized by its bold black dorsal patch that contrasts sharply with its white to pale yellow body. Fine diagonal lines run across the flanks, and a characteristic black eye bar provides camouflage. The dorsal, anal, and caudal fins are edged in bright yellow, giving the fish an elegant two-toned appearance that makes it a standout in any marine aquarium.

In the wild, Chaetodon melannotus is commonly found on coral-rich reef slopes and lagoons, where it feeds on a mixture of coral polyps, algae, and small invertebrates. It is one of the more adaptable butterflyfish in captivity and will often accept prepared foods relatively quickly compared to more finicky relatives. While it does consume coral polyps in the wild, its willingness to transition to captive diets makes it a reasonable choice for experienced aquarists maintaining fish-only systems.

This species is peaceful toward other fish and does well in community aquariums with non-aggressive tankmates. It should be kept singly or as a mated pair, as conspecific aggression can occur in smaller tanks. Provide ample live rock for grazing and hiding, along with moderate water flow to simulate its natural reef habitat.