The tiny little guy is growing surprisingly fast so far and is now slightly smaller than the size of a quarter. Not only is the existing tissue expanding, but he's even grown new tissue and new tentacles that you can see in the photograph on his lower right side. It looks like he is trying to complete the disk, it will be interesting to see if that's a mouth developing in the middle.
I've now sold two of the three larger frags. Here is a updated family photo showing the little guy in the bottom left, the remaining frag in the top middle and my other unfragged elegance at home on the top right.