Hey Buon, about what size and what color is it?
Thanks boun11 [emoji1317]
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^^^^ i have a vollyball sized colony of this in my tankHard to tell from the pic, but it does look like a seriatopora. Perhaps S.caliendrum or S.guttatus which is known as green birdsnest. When most of us including me, think of birdsnest, we think of S.hysterix which is pointy.
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