A betta would lovvvveeee a ten gallon!
a ten gallon is actually pretty tiny in the aquarium hobby, it's classified as a nano tank! As a result, there's actually very little fish from the local fish store you can ethically keep in it :(
If you have a green thumb you might also want to look into how to keep aquarium plants ^_^
If you really love the colors you get from bettas you can do a sorority of 6 girls in a 10 gallon. This can, however be a delicate process, so make sure to read up on it ! The bettafish keeping part of this forum is pretty extensive, feel free to explore and learn! It's actually another forum on it's own~ it's soooo fascinating :)
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