I have one really great fish store in my area, so i do all my buying there....but i was in a petco a couple of weeks ago adopting some kittens, and i went into the aquattics section. After visitng, I realized that I would never buy ANY fish from that Petco. Many of their fish were dead, and I won't buy anything from a tank that has dead fish in it. I mean, there were chewed up fish bodies....ones that had obviously been there for days. they probably think that if a fish dies, its fish food or something...who knows.
Pete