Well I did a search...
The ONLY two things that I have found that may implicate that it is not a LTA (or Doreensis) is that that type likes the substrate as a home as Thomas stated, and that they have more of a pink or reddish foot. I realize that that may not always be the case but in this case I think I'm going to settle on a BTA. That's what the LFS said it was, but it was kinda shriveled up when I bought it (I think he was sleeping, it was late), but when it opened up, I didn't see any "bulbs" so I got concerned. But now I find out that a BTA doesn't always have those bulbs so now I'm happy.
The fish you see is not a Clarkii, it is an A. Sebae. His original sebae anemone died (I didn't read up before I bought one, so I regret to say that his demise was my fault). After it died he looked so lonely so I bought an easier to take care of anemone. It took him 2 days, but he finally jumped in. I think he thought he was "cheating" on his other anemone.