The Horned Heniochus, Heniochus varius , also known as the Heniochus Brown Butterfly, Humphead Bannerfish, and Horned Bannerfish. This Butterflyfish derives its name from a small projection resembling a horn upon its brow as well as two smaller projections above each eye. The bottom half of the Horned Heniochus is primarily black and gradually turns to yellow. This gradient coloring is intersected by two bright white vertical lines originating from the dorsal fin. What this species lacks in color it makes up for in fascinating morphology. The Horned Heniochus is a risk to keep in a reef tank as they will nip at sessile invertebrates, tube worms and sponges. However, they do quite well with other fish, and are peaceful in nature, and should not be kept with aggressive tank mates. If more than one are desired they should be introduced to the tank at the same time. The Horned Heniochus can grow to be 7 inches, and should be kept in a tank no less than 80 gallons if kept individually, and no less than 125 gallons of kept in a pair. The tank should also be stocked with plenty of rockwork allowing it places to hide as well as ample amounts of free swimming space. The Horned Heniochus will eat a carnivorous diet consisting mainly of frozen Brine and Mysis shrimp and other finely chopped meaty preparations. They should also be fed a variety, and often to help hedge against it nipping at inverts and corals. They will thrive in a temperature range of 72-78?? F and a pH of 8.1-8.4.