Like everyone else, Compatability?

Would they move a little too fast for my betta(Even for a very active betta)?
Not in my opinion. You could do with a group of rummy-nose tetras but just a side note, they can be difficult on transport although if acclimated, they are totally worth it.:) You can't go wrong with some harlequin or hengeli rasboras.
 
What about more swordtails and/or some colorful platies? They seem to love to hang out together and get along so well with other fish.
 
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