you are getting a bunch of half truths. the lfs that told you they sit there and look pretty is right, as long as you have a pod population, or can get them to eat prepared food. they are a pretty hardy fish from what ive experienced so far, what ive read, and what ive been told. if you have plenty for them to eat, they are great. mine eats everything that is put into the tank, i just have to make sure to get the food down there for him.