04-18-2013, 04:45 PM
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A lot of people have success keeping a betta in a community tank - I've done it with several schools of small fish, including tetras. It's one of those things that will either work, won't work, or will work until one day it doesn't. Some people feel that it should not be done on principle, and that's fine - We all feel that way about one thing or another. What's important here, and really with ANY combination of fish (bettas are not special), is that you do something if it's not working. You cannot will it to work. As long as you have a backup plan, you are good to go, in my opinion.
One thing you don't have going for you is tank size. A ten is the absolute smallest tank that I would consider, and the small tank is not going to improve your odds. Just something to think about.