currently, Cloud is residing in a 10 gallon tank he has to himself. I've been toying with the idea of buying another tank for another betta (i don't like the idea of keeping them in the 1 gallon tank upstairs)... but rather than buying another 10 gallon... is 5 gallons enough for a betta? Have I just gotten too used to seeing him have the whole tank to himself that anything else just seems to small? I think a 5 gallon could fit nicely on the shelf on my tank stand