halp

TANK— 36 gallon bowfront LPS dominant HOBs, canister, ×2 skimmers 2 gallon water changes weekly live stock: medium (8 fish) coral stock: heavy aka stuffed PARAMETERS— salinity: 1.025 alk: 9dkH ph: 8.1 temp: 78° I currently have a 8" cube, containing a Rainbow BTA, and a Black Widow BTA...

I believe I've narrowed down what this zoa frag is, any opinions are welcomed.

When it is closed it looks like a chalice, but when open the heads look like a blasto. I showed these pics to my local reef shop and they say blasto, some people on reef2reef suggested chalice. Besides the shape of the heads, nothing else to me says blasto. The frag is on a 3/4 inch diameter...