Care
The Swallowtail Angelfish is known from steep outer reef slopes, caves, and drop-offs, at depths of 20-45m (66-148ft). Here, these fish feed on plankton in midwater, in small groups comprised of one male and several females. The angelfish from the genus Genicanthus are unusual in that they are not classed as true dwarf angels, yet they remain relatively small sized fish. They also display a remarkable sexual dimorphism. This particular species is ideal for the reef aquarium that has been constructed with lots of shady overhangs and crevices amongst the live rock. Although it does not grow to a huge size, the Swallowtail Angelfish is a very active species that does require a good amount of space. Keep either singly, as a male-female pair, or one male with a harem of several females, but never house a male G. melanospilos with another male or with any other members of the Genicanthus genus - especially those of similar appearance. Will usually ignore some of the more placid species of dwarf angelfish from the Centropyge genus, but as each fish is an individual and behaviour is certainly not set in stone, do observe very carefully. These fish have been known to pick on small planktivores such as wreckfish (Pseudanthias spp.), fairy and flasher wrasses, and fire fish, but they are perfectly safe with soft and stony corals. Good water movement is essential, and plenty of live rock will be appreciated for shelter/grazing (plenty of dimly lit areas will also help with the settling in period). The Swallowtail Angelfish generally adapt very well to life in captivity, accepting aquarium fare and acclimatising to the conditions found in a well-maintained tank. This species is recommended for intermediate to advanced aquarists only. May also be seen on sale as the Spotbreast Angelfish.
Feeding
Should be offered a varied diet including Spirulina & marine algae as well as meaty fare such as vitamin/Spirulina-enriched brineshrimp, Mysis shrimp, special sponge-based Angelfish preparations, and finely chopped krill/squid/cockle/mussel. Feed small amounts 3 times per day.
Breeding
This species has not been bred in the home aquarium, but it is being bred in small numbers on a commercial basis. In the wild, eggs and milt are scattered simultaneously into the water column, and there is no parental care.
