Okay so I've heard that you should really only put more fish in with bettas when it's a 10 gal. or bigger, is this true? What types of fish work best with a betta in a 10 gallon tank? How many could I put in? I just need some basic tips because I need to decide if I should get a 5 gal. tank or 10 gal. Thanks!
Mollies get really big comparatively to the other fish on the list and tend to harass the betta later on from what I've read here and heard elsewhere. You can keep some tetras with bettas, but many species of tetras are nippy and territorial (not good!) so I'd check into species of tetras you have available near you and do some research. And yeah I'd say 10 gals is the minimum unless you're adding ghost shrimp or a snail :)