Congrats on your new bettas! If you don't mind a small suggestion- pick up 4 or more females, and keep them in a 10 gallon tank (or larger) together with NO males. The females have a tendency to be just as aggressive as the males, and if there are only 2, you very well may end up with only 1. Set up your tank with very heavy cover (plants, rocks, caves, etc) so there are a lot of hiding places, and introduce your females all at the same time, along with any other tank mates you might want to have with them in there BEFORE adding the ladies, so they are part of the environment upon introduction, and not targets for territory disputes. Get ready for some squabbles and ripped fins- have a couple of breeder nets on hand, to separate if necessary, too. Do it over a weekend, or when you have a few days off to keep a close eye on them, and can intervene if they start going too far. They should settle down in 3 or 4 days a good deal, and be pretty much peaceful with one another within a week or 2. If you have a male in the mix, their aggression may never settle, and they may keep fighting each other or kill him... or he may kill them. I have a 10 gal sorority tank up & running now, for about 4 mos... they are quite pretty and enjoyable after the initial pecking order & territories are setup. You need more than 2 of them, though, to disperse the aggression, or it is likely to just be a deadly fish fight. You can NOT do the sorority set up with males, and add a bunch to disperse aggression- they will all kill each other. Not that you were going to try it, I just didn't want my message to be applied to multiple males in a tank, as well... that is a big no-no. Only works with the ladies.