I'm trying to identify these anemones I have had for the last year or so. They were sold to me as rock flower anemones but they are definitely not the same as any of the rest of the crucifers I have. They move around the tank quite a bit up into the rocks and down onto the sand bed. They have a longer column beneath the tentacles and oral disc. The oral disc is about 2 inches across. Any help would be appreciated.