The 15 Multi-Pack assorted pack of Ricordea contains combination of orange, blue and rainbow mushroom polyp. They look awesome in any reef tank and make a great addition to it. These corallimorphs are covered with short tentacles which are colored in shades of green, orange, and other shades of vibrant colors in these Ricordea polyps. The Ricordea Polyps are semi aggressive in nature as compared to other marine aquarium invertebrates. It is recommended to keep these Mushroom Polyps away from other corals just to avoid the aggression in the aquarium. They need low water flow and moderate illumination. The Ricordea Polyps can be placed anywhere in your marine aquarium. Often, you will find them closed when you introduce it into the tank. Once these Mushroom Polyps get acclimated to the environment, it will open up. If there is bright light arrangement in the aquarium, these Ricordea Polyps has to be kept at the bottom of the reef tank. The Ricordea Polyps also show symbiotic relationship with Zooxanthellae, which lives inside the tissue and provides nutrition to the coral. In return the corals provide shelter to these Zooxanthellae. Apart from the photosynthesis, they can also be fed with additional supplements of phytoplankton and shrimps for continued health growth. These Ricordea Polyps show the beautiful color effects in presence of actinic lighting and thus is a valuable addition to any reef tank.