It is common knowledge amongst Walmart customers that their live fish are notorious for not living long, the tanks are rarely cleaned, and the time you have to wait to have an employee retrieve one for you is ridiculously long.
After several complaints from myself and others at several stores, these problems continue. The bottom line is that if they are not concerned about taking care of the animals they have for sale, then they should not be selling them. Please join in asking them to simply stop selling fish since they apparently feel that cleaning the tanks and removing dead fish is not important.
Fish are live animals that deserve to be taken care of, not allowed to languish in filthy conditions.
~graphic from petgoldfish.net~