Originally Posted by Fin Fancier
I had thought danios because, to my knowledge, they were among the peaceful community fish group. I was unaware that, like the minnows, they preferred cooler water temperatures. Well that checks them off my potential fancy list. I don't have any place to move the girls to so I could alter the temperature; they seem pretty happy right at 80 degrees. I just don't know what else to add, bloodfin tetras might fit the bill, but my ph is high about (8.0) and I'm pretty sure tetras like a more neutral to acidic if I remember correctly.
Danios are generally peaceful, it is just that they are rambunctious in their swimming and activities. They are just too active for Bettas. I mean, you can try it out and see what happens but just keep that info in the back of your mind is all and keep lots of plants for your girls to hide out in and feel more comfortable. They may not actually hide, but the more plants the more they will feel comfortable and swim about. This isn't particularly a concern with Bettas since they are such outgoing fish, but combining them with the danios, it may help is all.
Most Tetras are a bit nippy, Neons and Cardinals will be fine. Rasboras will work out very well too. Dime shaped Tetras you should steer clear from since they are much more nippy towards other fish and occasionally themselves. Keep away from barbs of course. You could also get Green Fire Neon Tetras, similar to Neons except they have much more blue/green than red where neons are in the middle and then Cardinals have more red than blue