With its beautiful yellow body along with a blue spot, the Blackback Butterflyfish makes a captivating addition to any tank. It is commonly known as the blue-blotch Blackback and the coral butterflyfish. The black stripes running through its eyes aid to confuse the predators. It is not considered reef safe, as it tends to nip over the corals and eat certain invertebrates. The Blackback Butterflyfish thrives well in a temperature range of 72-78 degrees Fahrenheit and pH of 8.1-8.4. It is difficult to feed in captivity, but once it starts feeding it does well in the tank. Keep the diet varied and feed the Blackback Butterflyfish with a combination of dry foods with live, fresh, or frozen meaty foods as brine shrimp, for its continued health. The Blackback Butterflyfish is mainly nocturnal and should be kept mostly in pairs or small groups. Juveniles resemble adults but lack the blue patch on the sides of the body. It should not be kept in a less than 55 gallons, and if it?s a juvenile then not less than 15 gallon. The Blackback Butterflyfish requires lot of hiding spots as well as plenty of space to swim; therefore the tank should be cleverly decorated. It is generally peaceful and can be kept in a friendly community aquarium. The Blackback Butterflyfish might turn territorial to other similar looking species; therefore we suggest you to keep the tank decorated with each niche, if you wish to keep them all together in your tank without aggression. Also, you can reduce the risk of aggression by keeping dissimilar sizes of butterflyfish and by introducing the smallest one at first.