The petco by me has guppies and I brought one home and it almost died and I took it back and they put it in their "hospital tank," where it died! All their guppies always seem to have ich and the gal ignored me when I told her I saw the ich spots on some of them.What's weird though is that my Petco is wonderful to it's fish. I bought my two guppies there, and all the fish I saw were in great shape. I only saw one dead fish too, unlike most of the other fish and pet stores I've been to. I really like my local Petco, not to mention that all of the staff there were continuously asking us if we had any questions or if we needed any help.
(Edit: Excuse me for the rant, but I'm still not over it.)