[FortWayneFish]

I'm not going to argue but this is my opinion ........

Ok now I don't see no reason why Guppies can not be kept in a bowl. Guppies are small fish and live in mudpuddles that dry up after the rainy season in the wilds. Most of these mud puddles have no flow, or airation to them unless its raining or a wild animal steps in the puddle. look at any Successful Guppy Breeders fish room..... they don't have 5 gallon fish tanks for there fish, a lot of them still use MASON JARS..

As far as Bettas , in the wilds they live in Giant Rice patties but very seldom move more then a few feet one way or another there whole lives. The males stay Put while the females venture around looking for mates.
Most Betta Bowls( 1.5 gallons ) will work just fine for bettas, they will also work great for white clouds and guppies.

Stocking levels need to be minimal and 1-3 fish
the nice thing about whiteclouds and guppies is that they do not REQUIRE warm water aslong as the water stays warmer then 60*f your ok.

A bowl with a wide opening would be better then a bowl with a wide mid section and narrow opening. A wider opening will allow for more air surface for your fish to breath.

As far as comparing a human in a isolation cell and a fish in a bowl... look in our prisons, we do it everyday.