Propagating anemones can be easy and quite rewarding.  While many of these animals eventually split on their own, the process can be sped up with some careful cutting and tender loving care.  The group pictured above was grown from a single bubble tip anemone over the course of a few months.  I cut the large brood stock animal with a scalpel into 6 pizza-shaped slices, being careful to include a portion of the mouth, base, and pedal disc in each fragment, and all 6 survived and grew into healthy clones of the original.  Starting with a large specimen that is in optimal health and using a very sharp instrument is essential.  Once the cuts are made, the animals should be returned into the same aquarium the mother lived in to reduce shock, and after a few weeks the cut specimens begin to take a normal shape and accept feedings.  Feeding meaty foods such as mysis or table shrimp a couple times a week will optimize growth and maintain good health while the animals heal.  Some anemones fare better than others with this process and the captive grown RBTA seem to do the best. As your experience with propagating anemones increases, so will your success, and the reward is well worth the work.