I have some pictures, but the videos came out better. This is my betta sorority 1 week in. Since this was taken, one of the bettas from the first half of the video has been re-added. She was sick, but is now healthy and happy. The blue one, Toothless(Her face reminds me of the dragon, of the same name in How to Train Your Dragon.), her fins are better from fight in the first day.
I am amazed at how well they're doing. My guess is because they used to be in bowls, and right next to each other, so they're use to each other. They rarely fight. They chase, but nothing worse than that. I'm home all day, so am able to check on them often. I have 3 zebra danios in there too, but am going to give those to my father-in-law. They love the space! I'm so happy for them to be in their permanent home.
Around 2:44 of the video, "Tenma", dances to the music. :)
20 Gallon Betta Sorority Video