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Acropora pharaonis
''Acropora pharaonis'' is a species of acroporid coral that was first described by Milne-Edwards and Haime in 1860. Found in marine, tropical, reefs on slopes sheltered from wave action, it occurs at depths of between . It is classed as a vulnerable species on the IUCN Red List, and it has a decreasing population. It is common and found over a large area and is classified under CITES Appendix II.
==Description==
''Acropora pharaonis'' is found in colonies of flat table-like structures, or simply in structures of clumped vertical or horizontal twisted branches.〔(【引用サイトリンク】title=''Acropora pharaonis'' Fact Sheet. (Milne Edwards and Haime, 1860) )〕 Colonies can have heights over and they are orderly and symmetrical.〔 Branchlets are of lengths up to with diameters of and branchlets can reach long and have diameters. Brown-grey in colour with branches having pale tips, the branches become thinner towards the ends and contain many small branchlets, which contain axial, incipient axial, and radial corallites. The axial corallites, located on the ends of the branchlets, are small with outer diameters of between 1.5 and 2.6mm and inner diameters of 0.6-1.5mm.〔 Incipient axial corallites frequently occur on the branchlets, giving them a spikey surface. The radial corallites are located in close proximity and contain small nose-shaped openings and randomly placed spinules.〔〔 This species looks similar to ''Acropora clathrata'', ''Acropora parapharaonis'', and ''Acropora plumosa''.〔 It is found in a marine environment on the slopes of tropical reefs at depths between .〔(【引用サイトリンク】title=''Acropora pharaonis'' )〕 Its mineralised tissue is composed of aragonite (calcium carbonate).〔(【引用サイトリンク】title=Measurements and facts about ''Acropora pharaonis'' )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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