We have a pair of mated percula clowns that are fairly large. The female is about 4 inches..and the male is about 3 inches. They are in a 112 gallon tank but as we've added more fish, they have gone from spending a LOT of time in the front of the tank to spending more time in their 'corner'. This is a tank with PLENTY of swimming room, it's not overly loaded with rock nor is it overly loaded with fish.We'd like to get them a preferably beautifully colored BTA and see if they are happier with a nem. We had anemones in a fish only tank we had 20 years ago but it took 2 years to find out the anemones can MOVE! I had no idea and after 2 years it was quite a shock. Most of the fish hang around the middle and right side of the tank. If we can find a BTA that is large enough to survive/handle attempted hosting of 2 clowns this size, we'd like to give it a try.I'm still about concerned about the anemone's ability to 'travel' though and have wondered if there is anything that can be done (humanely) to keep it at least to a specific side of the tank (yeah, I know...not likely). We've gone to Mid Cities Aquarium and DNA but all the BTA's they have, just the 1 male clown is BIGGER than the BTA's. Are we going to have to buy online to get what we want?