That's also just a year old.
I don't see what makes bettas special as far as bowls go. Why don't people try to put cory cats or dwarf gouramis in one? Why goldfish anyways? Not that any bowl is right. Better 3 than one, but I am not about to go encourage people to get it. I am sick and tired of prejudice towards fish!!! They live for years if nurtured and loved. Most fishes live longer than 10 years and almost all can live at least 5.
To them they are kind of like being in a tiny bubble just big enough for a human child to walk in circles in, only there is no air being renewed. The only thing being added to their environment is food. And waste of course... Anyway, got to go k buy. Oh PS I do in fact value human life over an animal I am just making an example. Oh, and I do value fish's lives a lot also.