Zoas or Palys. I can't seem to find a clear answer ever on which particular ones may or may not carry palytoxin. I'm not knowledgeable enough to tell by sight, and don't really want to potentially trust my health on an LFS employee's word. I've scoured this forum about palytoxin related posts so I know the risk is low, and most keep them perfectly safely, but it's still outside my comfort zone. I figure there are plenty of other corals I can enjoy instead.