Hey this worked for me i don't know if it will work for you but u can try, before putting my anemone in the tank i caught my clown fish since he was hosting my powerhead and put him in a container with the anemone, he jumped right in and will not leave the anemone till today, i even flipped the anemone over and he wont get out of it, so if your anemone is already settle in its spot try to catch the clownfishes with a fish holder not a net, and put the container right next to the anemone, when the clownfish sees it, it could jump right in or just swim away, try it, nothing to loose, I think most clownfish stay at the top of the tank and don't realize the anemone is there, from my experience,