I recently added my female betta and three ghost shrimp to my planted tank and everything is great so far! There seems to be 1 adult shrimp and 2 younger shrimp. The adult shrimp stands his ground and doesn't let Lucy (betta) chase him around. Good for him. The other two little ones will run..lol. She has gotten used to them and will just swim by them, unless they are eating flakes then she will go up to them. The larger of the shrimp will grab the flake if i present it with tweezers. I haven't tried it with the younger ones since they are usually in hiding. I'm happy Lucy and the 3 shrimp are living in peace :D
Those little snails are annoying though. They sit on the anubias and when they get off you can see all the poop they are leaving behind! Might have to get rid of these soon!