I am currently reading up on bettas and I must say, I've taken an interest in the breed. I'm considering a male betta and maybe one apple or mystery snail as his tank mate. There are bigger fish I want to get first but in the future I'm considering keeping just a blue male betta by himself (or perhaps with a large snail) in a 20 gal. It seems standard to give a betta a 5-10 gal tank but does anyone keep one by itself in an even larger tank? If possible, I'd rather not buy a 10 (unless it's a quarantine tank) and would like to give him a lot of space.