Hey, They are saying that bettas can be fine in a 1 gallon. Not necessarily .25 gallons. I agree 1 gallons CAN be suitable for bettas as long as the water conditions are kept in pristine conditions and the betta has a comfortable amount of room. The reason most people suggest larger tanks is because the fish are generally happier,you can't really heat a 1 gallon very safely, and you need to really keep on top of water changes.
Also, the Administrator pointed out that (and I quote): "Some fish keepers have success with containers smaller than 2.5 gallons. However, such containers require more maintenance, are difficult to heat properly, and do not allow much room for decorating or enriching the betta fish's environment."
Now that being said, I wouldn't recommend a 1 gallon. 2.5 gallon minimum for me. Bigger (in the case of fish) is almost always better :)
Last edited by DragonFyre14; 10-28-2012 at 06:33 PM.