Walmarts do not care for their fish at all (at least all the ones I've been to). The fish are lucky to get fed at all. Hence why I picked up Diablo. He was such a pretty fish and I didn't want to subject him to the same death they all get. Literally, that's what they do, sit in those cups and slowly die.
Our Walmart had tons of fish with pop eye and so many other problems. And they leave them there for all the little kids to see. I hate it.
One day, in fact, it was a couple days before I finally purchased/saved Diablo. Among the other bettas he was with, one had passed away and was just floating in its cup. An employee come over and goes, fish fish anyone? We told him no and instead told him that there is a betta fish there that is dead and has been all day (I had been there at like 6:30 in the morning after work and then later that evening). He goes no, I think he's just sleeping. I wanted to smack the idiot. I was like no, he has been floating there dead since I came in this morning after work. The guy looks at me and goes oh. Would you guys like to sign the death certificate? He ticked me off so much. Everytime I go there, I just want to snatch up all of the fish because they are not fit to have any of them. If you can't care for them properly, you shouldn't be allowed to sell them.
I know that it's not fair that I have only chosen one fish and left the others to die, I know.....it hurts to do it. But I don't have the money or tanks to take care of them all. And I honestly don't want to snatch up all the bettas then have to leave them in those awful cups. I hate going to Walmart anymore because I always, always have to go to the pet section and always see the horrors in those tanks and those cups.
Sure, their bettas won't be in the best of shape, but buying them is pretty much like rescuing the poor things.