Coral identification needed

[HippoMonstrosity]

Hi, I need some help identifying a coral I recently bought. I cannot for the life of me remember the name of the coral and while the employee who helped me pick it out said it did not need any additional care, the coral hasn't opened since shortly after being placed in my tank. He is currently placed on rockwork with fairly direct light. He is in a corner of my tank my fish/crabs don't often visit so I'm not sure why he is closed. Identifying him might help me move him to a better spot. He looks similar to a Zoa, but I'm not sure. My best guess at this point is there is too much light. I had the same issue with my zoanthid which opened up almost immediately after being moved. (Picture taken during the short period he was open)

 

[Oshengems]

That looks like some type of cyphastrea