I adjusted the clump of big Anubias tonight, trying to get more exposed. Turns out it wasn't three shoots off a single rhizome like I thought, and instead was three shoots with roots, one with a bit of rhizome coming off I think. I really struggled with getting them into the gravel again and some roots are still above the gravel. lesson learned (most of the white is the lower layer of white gravel I have below the tan).
I swear the crab came out of its log, looked at what I was doing, then went back inside to judge me in peace and quiet.