Acans are the gems of the ocean because they’re one of the best and brightest corals you can add to your tank without breaking the bank! They come in a variety of different colors and people have Acan Gardens that are very colorful! Acans are one of the easier beginner corals and although daily feedings are not required, 1-2x a week spot feeding will induce growth and shape! Acans prefer low to medium flow and should be placed in the bottom to middle of your tank!
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:
- 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