I threatened to buy all the betta fish at one Petco in Knoxville and drive them across town to the other Petco so I could show the Store manager there. The bigger Petco in Knoxville really takes great care of their fish and the main lady who does the fish is so nice and helpful plus she has a lot of her own aquariums. They should hire people who love and care about animals - and put someone who loves fish in charge of the fish areas. You can always tell a difference in the fish in places where someone who works there loves fish. The larger Petco has had this one betta for about 3 months or more now, it's ugly - an almost washed out yellowish nasty greenish brownish color and you would never, ever be able to guess he didn't just get shipped in there. He is happy and healthy and always has a bubble nest going.
But anyway- since I threatened to do that - they changed the water immediately on all the Bettas and pretty much every time they see us coming now - they get ready and start water changes while i am in the store. They all think I am a crazy betta lady and the last few times we went in a few employees came up with "I was thinking about fish and I have these questions - can you answer them?" "I looked up and you were right, you can keep female bettas together, can you answer these questions for me?"
I am not to quiet when i see the fish in bad conditions but since we spoke up in the small Petco mostly the bettas care has improved a little.