Wentreefgirl,
that was no slag on my part. And I use the same books along with Wallace, etc. If you look closely at the radial on A. multiacuta and the frag in question, you will note the different form and spacing of them. A. multiacuta has hardly any radials, but the cultured piece does. Also, A. multiacuta does not really have branches. It can't be A. multiacuta in my opinion.
As to it being A. fenneri, I am, also, not convinced, but it is a better bet based on the general structure. As you say, the flatness of the Veron examples is missing in this frag (this could be a photographic artifact!), but there is really no other possibility based on what I see. It would be interesting to see how this frag developes. As Justin (Fijiblue) mentioned, these are cultured at an unnatural depth and current for the specific coral. Not to change the coral, just to simplify the aquaculture. I always keep in the back of my mind that these corals are often cultured and sent out under incorrect names, just to help the marketing. If it's attractive and can be maricultured, then give it a name and sell it. Some of these may not even have been described, yet! I have one coral that is currently being aquacultured, although my piece is collected, and I cannot truly ID it. It could be A. paniculata...or not. Depnding on the book you use. Mine developes plates aroun 35 mm thick, which is too large for the general description. If it had tapered axials, I would put it under A. caroliniana, but it clearly doesn't.
Also, while carrying on about books, many of the skeletons shown in Veron's set are poor examples of the species. Apparently, he often chose to use the oldest possible example instead of the best possible example. His reasoning for his choices is unknown to me. Wallace has the advantage of showing multiple examples in most cases, which gives a better overview of the species. Still, there are quite a few less nominant species in Wallace's book. It's always a compromise.
Please don't take any of this personally. I enjoy particularly your enthusiasm on this forum! Go for it. I think various points of view make us all think (most of us, anyway!).
Prost to you all :beer: