I decided to put this under Beginners, because For all beginners reading this, don't do what this beginner did. My good friend who moved to town recently has a nice room, but on his nighttable is a teensy weensy little tank with a betta in it. I explained to him that the tank was too small for the fish and that his Betta wasn't living a happy life, but he disagreed. Then he asked me how much bigger I thought he needed his tank to be, and I said about a 5 gallon tank or bigger, and do you know what he said? " The pet store told me that if it went in a bigger tank it would DIE! " COMPLETE OPPOSITE! So that's an example for you of the care of bettas!