The Metallic Plate Coral, Heliofungia actiniformis, also known as the Heliofungia Plate, Heliofungia Mushroom, or Disk Coral, is a LPS plate coral with long tentacles often with neon tips. It actually often resembles an anemone. It is a solitary, aggressive coral which should be kept at a distance to other corals for their protection. The Metallic Plate Coral has the ability to inflate its body to twice its normal size with its stinging sweeper tentacles extending well beyond its base. It is best housed at the bottom of the tank over a fine sandy substrate in a reef aquarium with moderate waterflow and moderate lighting. It should be fed a carnivorous diet consisting of microplankton and finely chopped shrimp or fish for continued good health. Fortunately, the Metallic Plate Coral is easy to maintain making it an excellent choice for any reef aquarium.