I have one. She only eats frozen foods, and is a shy feeder. Although she is almost always out in the open, she is always prepared to dart back into the rocks. She is easily intimidated and gets nervous when other fish swim by quickly. The only fish she doesn't get along with is my potters angel; they don't like each other at all. I'm thinking about adding a couple more females and hopefully one of them will become a male.
Overall, I would say it is a beautiful little fish that needs a peaceful aquarium with lots of hiding places in order to thrive.