My brothers betta lived for a veeeeeery long time, 3 or 4 years I believe (betas often live at least 3 years), in a vase with a plant topper. But I do believe he got the betta already in the vase and didnt have to transplant a fish or the plant. And in the end he was shocked that it lived so long.

I had a betta that lived in a small bowl, and he lived for a good 8 months before hurling himself from his bowl in a desperate cry for attention and commited suicide on my birthday. A very sad little 19 year old I was that day.

One thing to remember is that Walmart fish will general go belly up much quicker than fish from pet specific stores where they take better care of them, employ staff which are interested in animals and not just assigned there for Thursday night shifts. Imagine buying a cat from Wal-Mart from a 17 year old who is disgruntled and hates his job and isn't interested in scooping litter or helping them learn good cat skills.

I would advise you to spend a little time surfing the internet...check out this site... http://www.betta-fish-care-breeding.com/ and consider checking out a book on betta care, if not at the library, I'm sure you can find one where you got Mr. Fish.

All animals deserve a good shot, great and small.