Bubble tip anemones are a pretty low-light species and they are natural hosts for some species of clowns. Plus, they aren't as destructive while wandering as a rock anemone is. Rock anemones have very strong stings and a BTA's sting is pretty weak in comparison. I have kept my BTA under 3 watts per gallon for over 2 years now, and it has produced 2 babies through a split. It is happy & huge; but I feed it with small chunks of raw calamari steak. I have heard of clowns taking to rock anemones, but I personally would risk my corals with a BTA over a rock anyday. After the split, the babies wandered so much, settling right next to both LPS & soft corals, touching them. The corals obviously didn't like it & stayed closed, but nothing died or got an infection. I just moved the corals out of reach until the babies finally settled down. Plus, you can get captive 'propagated' BTAs from other hobbyists - the result of splits. This reduces the strains on our natural reefs; I don't know if rock anemones are available as anything but wild caught.