Ok so I recently set up my 20Gal tank and have 2xPineapple Swordtails and 2xGold Dust Mollys, one male and one female each. I have small rocks on the bottom of the tank as a bedding and a few large rocks for hiding places. The problem that I am having is that my female swordtail is chasing the other 3 and seems to be bullying them a bit. My male swordtail died the other day and I just got another male along with an algae eater. My question is if there is anything i can do to either get another fish to keep the peace or if i am doing something wrong to aggitate the female.