Lol Lobophyllia hemprichii was reclassified as Acanthastrea because of it's highly aggressive tendencies and the fact that it only ever has a single mouth per polyp. It melts any true Lobo you put next to it, but does not fight with acans of various species.
Only Lobophyllia pachysepta was reclassified to Acanthastrea; all other Lobophyllia are still Lobos. They were reclassified based on molecular (genetic) evidence. The way Acanthastrea pachysepta is told apart from Lobophyllia is by the flesh texture; A. pachysepta has a more "wrinkly" flesh texture with concentric folds and septal beading, while Lobophyllia has either a "velvety" or "warty" flesh texture, and rarely has septal beading. As far as I know, A. pachysepta is a South Pacific endemic, so most of the pachyseptas should be coming from Australia, although I have seen a few come from Indonesia.
Lobophyllia pachysepta, not hemprichii, although there is an Acanthastrea hemprichii (unrelated). What @Reefkeepers Archive has is most likely a L. hemprichii based on the flesh texture. Acanthastrea pachysepta doesn't always have one mouth per polyp; it can become polystomatous in elongated or flabello-meandroid polyps.
Thanks @encrustingacro ! Than what would "symphyllia" be (not wilisoni) as in the one in this photo
