Genicanthus melanospilos, commonly known as the Swallowtail angelfish or Spotbreast angelfish, belongs to the family Pomacanthidae and is found in the Indo-West Pacific region. This striking fish exhibits dramatic sexual dimorphism:
- The female is yellow dorsally and light blue ventrally. Its caudal fin is marine-blue, highlighted by a dark, blue-black edging on the top and bottom.
- The male, on the other hand, is marked with a series of vertical red stripes covering its entire pale-colored body. The male’s tail is forked and appears yellow with blue edges.
This species is one of the few angelfish that can be kept in a reef environment without causing harm to stony and soft corals. It is more peaceful and can be kept as a mated pair or in schools. Interestingly, fish of the genus Genicanthus are the only zooplanktivores among the angelfish. Their diet should include Spirulina, marine algae, high-quality angelfish preparations, and finely shaved mysis or frozen shrimp. For a thriving environment, provide a tank of at least 125 gallons with plenty of hiding places and live rock for grazing.
Keep an eye out for the elegant Swallowtail angelfish in the aquaria with its multicolored livery!