I think the confusion here is that in the wild a small pool of water is probably somewhere in the region of 6" deep and a few feet long/wide, a betta bowl hardly comes close in size, plus as mentioned these pools are seasonal and once rains arive they all join to create one large shallow pond (rice paddy). It is my opinion that no fish should be kept in a tank with less than 10g of water for the entire duration of its life (some european countries have this as animal law though i have no problems with using 5g tanks for breeding and fry raising or small hospital tanks).Olive said:.....I know that bettas are naturally in little pools of water in the wild......