They look perfectly healthy. To be on the safe side you might want to run activated carbon and skim a little on the wet side. Some people report problems with mixing certain species and no problems mixing others. If they actually touch each other, I would expect a problem. I've had flower anemones with my RBTAs for I don't know how long, definitely more than a year-and-a-half. The only time it's been an issue is when the flower and RBTA tentacles touch, the flower tentacles shrivel and remain that way for weeks. The RBTA retracts, but doesn't appear to sustain any damage more than maybe keeping those tentacles retracted for a few days. Definitely, the flower anemone is more adversely affected by the RBTA than the other way around. When this was happening I put a piece of liverock between them to prevent their tentacles from coming in contact with one another.
