I was in Petsmart(not something that happens often!) and saw that they had DPs. I had been thinking about getting them eventually so I took a closer look. I was quite surprised to see that they were in with the Guppies everything I have read has said that they should only be in a species tank. When I asked the person who was in charge of the fish about it she gave me a funny look and said that that was not true at all. I assume that this is just another proof that the name of the store is pets-mart not pet-smart. Am I correct?