Black Corals

Very little information is available on Cupressopathes corals. It is not known whether they possess the symbiotic algae, zooxanthellae, within their tissues (3), although many black corals do not. This means that many black corals, unlike numerous other corals, are not restricted to shallow, sunlit waters where the zooxanthellae can photosynthesise, and instead are able to inhabit deep and dark waters (5).

Cupressopathes corals are listed on Appendix II of the Convention on International Trade in Endangered Species (CITES), which means that trade in this species should be carefully regulated (1).

This little-known group of corals belongs to the order Antipatharia, also known as the black corals after their black skeleton (2). There are thought to be five species of Cupressopathes, the most common of which are Cupressopathes abies and C. pumila (3). Some consist of just a single 'stem', whilst others are sparsely branched (4). The skeleton bears small, smooth spines and is covered with polyps, measuring just 0.6 to 0.8 millimetres across (3).

Cupressopathes corals primarily inhabit reefs (3).

Cupressopathes corals are known from the western Pacific Ocean and the Indian Ocean (4).

Listed on Appendix II of CITES (1).

Information regarding the status of Cupressopathes corals is lacking, but like all black corals, it is likely to be impacted by over-harvesting for the jewellery trade. Black coral is highly valued in the jewellery trade because its dark skeleton can be polished to a lustrous sheen (6). Identification of black corals in the trade down to the level of genus is difficult, meaning that it is hard to determine the extent to which Cupressopathes species are affected by such exploitation (6). Black corals around the world are also known to be impacted by habitat degradation, and recently, a small trade in live specimens for aquariums has been reported (6).