Thanks everyone for all the great pictures of some really cool zoanthid colonies/frags. I dont want this next post to seem stuck up or rude, but i want to clarify a little more about the polyp, since i dont know if i have seen it in any other tanks.
They have the exact same color as a nuc green in my tank under 400 watt 14k MH.
Some beautiful polyps that are simliar but not quite the same are these polyps kindly posted by yimyim
I also have the polyps pictured above in my tank, and they seem to be a darker green, with very small stripes on the middle of polyps if looked at closer. Now i know that polyps morph tank to tank, but im fairly confident these are not the same since i have some in my tank and they are a more dark green, like a xmas tree color...haha.
The last zoanthids posted are very cool as well, but i also have a larger colony of those which are not quite the same, as it is more of a ring of green not a full green zoanthid.
Mine came in from Australia about 2 or 3 years ago if that helps. Im just curious because it has always been one of my favorite zoanthids. And just recently while looking at my tank i thought to myself, wow, i have not seen those in person before in another reefers tank.