i have to betta girls that i got today. They are crowntails, and i think that they are sisters because they have the same markings and same tail shape, I put them in the same tank and they are following eachother, but not flaring, just swimming like they are shoaling. Do you think that they will fight? If they are sisters will they be nice and not fight? lol, ive never had a female before, just males and i know that they never like eachother.