LTA's (Macrodactyla doreensis) have a distinct column. The pics provided are excellent for showing the characteristic LTA look. And yeah, it's still bleached, but again, with your lighting and regular small feedings, you will see it regain it's color I expect. BTA's are the hardiest of the host anemones. Ideally, you will not mix it with other anemones. If you feed it and provide good conditions you can expect the anemone to get quite large and eventually (or not so eventually) clone. BTA's are host to several more species of clown fish than LTA's. It might be a good thing that you got a BTA. They are the best of the host anemones to start off with.