Most of the Bergia's are tank raised for the hobby and tend to be fairly expensive. From what I have read they do a great job, but do such a good job that they soon eat themselves out of a home. So if anyone gets some try to have a "next" home in mind for them. Ofishal would have been a great home for some they were over-run with aiptasia. I hope that someone contacts the craigslist person and puts them to use. Peppermint shrimp seem to keep my aiptasia cleaned up pretty well.