From what I have seen, the space invader grows upward mostly, a few people have had them grow outward more than upward. So, I wonder if there are a couple of different species (pectinia) of space invaders out there?Do they need a larger "base" to keep growing? Or will its skeleton/flesh grow mostly up/outwards? Close up of the disk:
Looks like some flesh wrapping around the disk. Would it benefit from gluing the disk to a larger piece of rock rubble?
Thanks!
They don't need more base to grow upward, either they do or don't. Some species of pectinia will only grow so much base and will cover more height.