The Grey Poma Angelfish juvenile is an elegant-looking species that exhibits two different tail fin colors - yellow and gray. It is commonly referred to as the Black Velvet Angelfish, Yellowtail Poma Angelfish. Since it is peaceful in nature, it makes a great addition to any fish only aquarium. The Grey Poma Angelfish is very popular for its coloration and beauty. It does very well in an established tank and acclimatizes more quickly in a reef aquarium. The Grey Poma Angelfish requires plenty of algae and sessile invertebrates to graze upon, that is why, try cultivating healthy algae filaments in a fish only aquarium before adding a Grey Poma Angelfish. The Grey Poma Angelfish is not considered an aggressive fish, but sometimes it turns aggressive when introducing another new fish in the tank. The Grey Poma Angelfish is more likely to pester newly added species such as gobies, fire fish, and to avoid any aggression between them, it is best to provide them with a larger tank or suitable hiding places. The Grey Poma Angelfish should be kept in a tank not less than 100 gallons, and with lots of hiding places that it can dive into when frightened. It should be fed with a varied diet that includes krill, raw table shrimp, squid, clam, flake foods and mussel. It may feed sessile Invertebrates, Algae, Sponges, and Tunicates and that is why it may consider reef safe but with caution. It thrives well in a temperature range of 72-78 degrees F, and pH of 8.1-8.4.