Saddle Anemone eating my fish

I have a beautiful Saddle Anemone (Stichodactyla haddoni) that is about 12 to 14 inches in diameter that is feeding on my fish. I knew this was a possibility when I got it, but it wasn't supposed to be so big. I purchased a 4 to 6 inch size and ended up getting this huge monster. My tank is a 135 gal long tank and I figured a small anemone would be nice in secluded. However, this thing is huge and hungry!

Anyhow, I have lost a chromis, blue tang (4" long one), and 2 cardinals (which I loved).

Although I love the anemone also, I do want to be able to keep fish in my tank and my clowns have not hosted it after 6 months in my tank. I am thinking I may have to get rid of it. I really don't know what something that size is worth and would only suggest if for a tank without fish or clowns only. I would hate to have anyone else loose fish to this monster.

I'll try to post the picture too. It is an older picture and the beast is even bigger!

Advice on the value, offers, or suggestions would be helpful.