Please, If you think an angel or a rainbow shark will become stunted in a 55g you are seriously mistaken. I would like to see proof of your point. I have proven you wrong on the fact that bettas live in as you put it "shallow, tight, oxygen starved waters" I even provided you a link to pics of their natrual habitat. Did you even bother to look? Probably not. Anyway, I do have a reason that 55g is better than 1g, first of all filtration makes a huge difference, also bettas need a temp 78-80 which is very hard to provide in a tank that is not large enough for a heater. Bigger tanks have more stable water conditions. I do regular water changes on my tank and I also test my water. Do you even do that? Thanks Mduros, I normally dont say much about it, but this time it just really got to me, not sure why. I guess it's b/c it is in the newbie section, and I dont want new people to think that keeping bettas in tiny tanks with no filtration or heat is okay. And yes, it is like talking to a brick wall.