I had gotten the minnow as a feeder for my turtle, but I felt bad and put him in the fish tank instead (I'm a softie) and after a while I decided to get a couple more so the minnow could have a school to swim with..
But the two new minnows are harassing my betta girls!! They're nipping fins.

Should I put them in my mom's tank? I have 3 guppy fry growing in there and don't want them to be eaten..
I'm getting the 55gal tank Sunday.. Think if they have more room to swim, they will get along better?..