I don't have the guts to slice them lol. As long as the nem stays put and doesn't go godzilla on my corals, then it can stay gigantic. You are a nem guru, do you know if rock nems split? I thought they only popped out babies. I had bought a rock nem about a year ago and it immediately spit out babies, I only ever found 3 in the old tank. There are now 7 or 8 all within 4 inches of each other and the mother is nowhere near them in this tank, nor can I find any babies elsewhere in the tank.