Unlike hard corals, the Nepthea Tree has no internal calcium carbonate skeleton, and that is why it is considered a soft coral. It is found as small calcareous plaques, named sclerites, which are present in the coral?s tissue. The Nepthea Tree is named because it features numerous branches spraying outwards from a main trunk and also looks like a tree. Some of the polyps have additional layers of sclerites and therefore do not have the ability to retract. The Nepthea Tree is also commonly known as Cauliflower, broccoli, or branch coral for its morphology. It is semi aggressive and needs ample space between itself and other neighboring corals. Some Nepthea Tree can even produce toxins which are harmful to the inhabitants. It is moderately difficult to maintain in the reef aquarium, and requires medium to high lighting combined with medium to strong water movement. The Nepthea Tree is considered a good choice for a beginner to intermediate aquarist. For continued good health, the Nepthea Tree needs some additional supplement of iodine, strontium and other traces of elements. Apart from regular feeding, the Nepthea Tree undergoes photosynthesis using zooxanthellae which dwells inside its tissue and manufactures food and provides nutrition. It is known for its bright colors that add a splash of vibrant colors in your tank.