The adult Black Angelfish, is also commonly called as the Gray Angelfish. It has a gray body with dusky blue polka-dots and the same dusky blue highlights on the caudal, dorsal, and anal fins. With its beautiful patterned body, the Black Angelfish makes a captivating addition to any tank. It is very hardy in nature and requires moderate care. The Black Angelfish grows up to 20 inches in the wild and should be kept in a tank not less than 200 gallon if an adult is purchased. It needs plenty of live rocks for hiding and grazing, that is why make sure to decorate the aquarium cleverly. Although most Black Angel Fish are found alone in the wild, some pair up. In a home aquarium, the tank may be too small to allow for these territorial fish to be combined; if you do hope to try it, it is important to observe the fish carefully lest they attack each other. In a reef environment. The Black Angelfish may be found nipping at stony or soft corals, along with clam mantles, that is why it is not considered a reef safe species. It should be given a varied diet of Spirulina, marine algae, high-quality angelfish preparations, and Mysis or frozen shrimp. The adult Black Angelfish shows different morphology than juveniles, where juvenile is black with yellow stripes. The Black Angelfish thrives well in a temperature range of 72-78 degrees fahrenhiet and pH of 8.1-8.4. It is semi-aggressive and should be housed with limited number of fishes. The Black Angelfish should never be housed with predatory, hawkfish or puffer fishes.