The Genicanthus Semifasciatus or Masked Swallowtail Angelfish is well-known Japanese Angelfish, which originates from the rocky reefs of northwest Pacific Ocean and Philippines. It is very easy to locate in small groups (comprising one male and a number of females) and harems. A female Masked Swallowtail Angelfish is mostly creamy in color and has widely-spaced yellow dorsal fins. These female angelfish show a better coloration as compared to their male counterparts. They feature a black band over eye and at base that further elongates to the caudal fin. These Masked Swallowtail Angelfish can be easily housed in a well-established aquarium with a capacity of 125 gallons with plenty of live rock and a couple of hideouts. They make a good reef-dweller as compared to their other cousins. This singles out why they don't nip at any stony coral or sessile invertebrates. These angelfish are hardy and should be given multiple feedings of supplemental algae, mysis shrimp, and brine shrimp for a healthy living. They thrive in temperatures ranging from 72-78?? F and a pH of 8.1-8.4.