In the past, I posed about my Gigantea touching my T. gigas. Most of the time there were no problem, then one day the anemone stung the heck out of the clam. That side of the clam was all retraced. I have to separate them. It took several days for the clam to recover. Now my clam is right next to my Magifica on one side and Gigantea on the other side. No problem.