Cute fish, die quickly. Stores that sell them are ruthless. They should not be in a hobby. I had limited success with Rods food, but its a pain to feed them, and they are very, or at least my were, shy, so they moved away from food. Take them back, and punch the owner of the LFS in the face for selling them. Ok, don't do that, but perhaps look for a different store. If he sell them, odds are, he will sell some other beautiful things that will die soon after.