I have a pretty small tank, that I had goldfish in, and they didn't do to well. I always overlooked beta's because I assumed they'd be boring to look at. Whenever I see 'em on sale at petsmart or stuff, they don't look very active. If I put 'em in a tank would they "liven up?" I kind of liked my gold fish a lot because they swam around and were very active. I assume they can't have tank mates very well, but seeing as I only have a 2.ish Gallon tank, that's not enough room for more than one fish anyway, right?