The Red Mushroom Polyp is a lesser-known member of the Actinodiscus group that looks awesome in any reef tank. Its brightness and vibrant colors is absolutely stunning and must be seen under actinic lighting, which further enhances its beauty. The Red Mushroom Polyp is very easy to care for and maintain, and since it grows and propagates quite easily in an aquarium, this coral makes a very good choice for novice aquarists. It is available either in pairs or singly attached to small pieces of rock. The Red Mushroom Polyp is semi aggressive in nature as compared to other marine aquarium invertebrates. It is recommended to keep the Red Mushroom Polyp away from other corals just to avoid the aggressive behavior in the aquarium. It needs low water flow and moderate illumination for its growth and development. The Red Mushroom Polyp can be placed anywhere in your marine aquarium. Often, you will find them closed when you introduce them into the tank. Once the Red Mushroom Polyp gets acclimated to the environment, it will open up within a weeks time. If there is bright light in the aquarium, the Red Mushroom Polyp coral has to be kept at the bottom of the reef tank. Photosynthesis is the major source of nutrition to the Red Mushroom Polyp and additional feeding is not that necessary. But it has to be ensured that the currents should be able to supply it with necessary nutrients and trace elements for its continued growth. The Red Mushroom Polyp undergoes photosynthesis with the help of the entrapped symbiotic algae, zooxanthellae. This alga manufactures food and provides nutrition to the coral using light energy. The Red Mushroom Polyp propagates easily in captivity simply by splitting. It generally expands during day and shrinks at night.