My RBTA staeted shrinking after about 2 monthes and divided twice yrilding three small not so good looking nems. I read in several places here that feeding them should not be extensive. For about 2 weeks i feed one of the three almost every day with mainly small pieces of mussle. The response is clear: its growing and looking much better than the 2 "control" ones that do not get any food and look shrunk and are hiding.