I might keep the little blue one, she seems a little better on her own, but the green one swam around the tank with her gills displayed and her mouth wide open biting at everyone. I double checked to make sure it wasn't a juvie male. Petsmart used to have most of the bettas in dividers in the tanks, but I guess they sell so fast now they have them in cups again. They've got nice deep cups so that even though they aren't as big around, the fish still have plenty of space.