I bought this brain today. Each polyp/lobe/whatever they're called on brains is about 3/8" to 1/2". I was just wondering if anyone knew the species so I can log it in reefcon pro and read up on them.
It's almost definately Favia fragum. I have one that looks almost exactly like that but spherical. A very nice coral that becomes intensely bright green uder the right lighting.