Tank Size: 90 Gallons Tempermant: Peaceful Maximum Size: 10" Coloration: Black, White, Yellow Diet: Omnivore Regions Found: Indo-Pacific Ocean, Indonesia, Tahiti, Vanuatu, Japan, Seychelles Reef Compatible: No Experience Level: Beginner Water Conditions: 74-82° F, SG 1.020-1.027, PH 7.9-8.5 Other Names: Heniochus Black and White Butterflyfish, Longfin Bannerfish, Pennant coralfish, Poor Man's Moorish Idol The Heniochus Butterflyfish is one of the most popular fish in the aquarium trade. With its stunning black and white coloration and long white dorsal fin, the Heniochus Butterfly is truly unique. The Heniochus Butterflyfish can reach a fully grown adult size of 10 inches, so it needs to be housed in a tank no smaller than 90 gallons. The Heniochus has yellow fines and large alternating thick white and black stripes. Its main distinguishing feature is its very long dorsal fin. Although stunning and colorful, the Heniochus Butterfly does not make a good choice for reef aquariums. The Heniochus Butterflyfish is known to nip and pick at corals. Some will even make meals of certain corals. The Heniochus Butterfly can also bother some inverts. The Heniochus Butterflyfish is an omnivore, so it needs a diet rich in meaty foods, as well as some greens as well. Mysis and brine shrimp are great for the Heniochus Butterfly. Dried algae and other herbivore foods will also help your Heniochus Butterfly grown and thrive. For the most part the Heniochus Butterfly is a pretty hardy and easy to keep fish.