I have a 15g tank with one female platy and a nerite snail. I was thinking about putting in two female swordtail females, and two dwarf or honey gouramis. I don't want to put any fish in that would bully my platy. I won't put guppies in, as I've had bullying problems before. I ideally want colorful fish, so if you have any other suggestions I would appreciate them. Preferably fish that could be found in Petco or Petsmart.