Thanks for all your replies, and I'm sorry you have to read posts like my previous two, and like those by cation and SRC. Some people don't seem to understand that this is neither a debate nor a psycology class, and I regret it.
Anyway, I thank you guys for voting and for explaining about your tanks and why you voted for what you did. I'm glad to hear that you are concerned about this issue, and as long as the opinions stay just opinions, I'm glad my thread is a host to them.
In my personal opinion, I think there is no set and standard "minumum tank size", which is the precise reason I started this poll--to find out what you guys think about it. In my opinion, as long as the particular betta is reasonably active, seems happy, and has room to swim around, the proper size for a habitat could range from 1/2 to 5 gallons for a lone male betta. Each betta (as many will attest) has its own personality, preferences, and particulars, and those things are, in essence, what dictates minimum tank size. To create a generalization, though, I'd say that an ideal tank would be rectangular, and long in at least one dimension. That allows the betta to swim, stretch its fins, and hide (from what?
). As for the actual volume (and this is, again, a generalization) I think 2.5 gallons is probably reasonable for MOST bettas.
Thanks again, and please continue to post.