About Acropora tenuis (Dana, 1846)
Acropora tenuis forms corymbose colonies with regularly spaced branchlets. This species has tube-shaped axial corallites, while its radial corallites have flaring lips. Its color can be blue, cream, yellow, or green, and it resembles Acropora vermiculata. This species is classified as near threatened on the IUCN Red List, and its overall population is believed to be decreasing. It is listed under Appendix II of CITES. Total population figures for this species are unknown. It is likely threatened by global coral reef reduction, rising temperatures that cause coral bleaching, climate change, human activity, the crown-of-thorns starfish (Acanthaster planci), and disease. Acropora tenuis occurs in the Red Sea, Gulf of Aden, southwest, northwest, and northern Indian Ocean, Persian Gulf, central Indo-Pacific, Australia, Southeast Asia, Japan, East China Sea, and the oceanic western and central Pacific Ocean. It inhabits tropical shallow reefs at depths between 8 and 20 metres (26 and 66 ft), found on upper reef slopes and in subtidal areas.
