Today, I was doing some maintenance on my tank. I was scraping the glass like I always do and my arm grazed my RBTA. I immediately felt a slight burning sensation. I didn't think much of it, but when I was done I had a nice little mark of where the nem got me. I didn't really think that my anemone would do that. Learned my lesson. Just another reminder to be very careful when we are handling the creatures in our tanks.