Yup it's the top one, there's actually more "frag" that I guess is perpendicular to the camera lens that you can't see. It'll be fine... just take forever to grow... unless I dose Oyster chow!
I have mine, it's slow as snot growing though, although the pico frag I made that was on the same disc eventually grew close enough to fuse to the main colony, but I think it will be some time before I'm going to frag this again.