Blu Ring Acan H04

Acanthastrea is a genus of large polyp stony corals in the family Lobophylliidae. The colonies are massive and usually flat. The corallites are either circular or angular in shape. The septa are thick near the wall of the corallite, becoming thin near the columella, and have tall teeth. The polyps are extended only at night and sometimes during feeding.

The genus contains the following species:^[2]

• Acanthastrea brevis Milne Edwards & Haime, 1849
• Acanthastrea echinata (Dana, 1846)
• Acanthastrea hemprichii (Ehrenberg, 1834)
• Acanthastrea minuta Moll & Best, 1984
• Acanthastrea pachysepta (Chevalier, 1975)
• Acanthastrea polygonalis† Martin, 1880
• Acanthastrea rotundoflora Chevalier, 1975
• Acanthastrea subechinata Veron, 2002

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