Hi! I have a male Platy living with 3 female mollies and a female swordtail in a 10 gallon tank. The platy chases, bites, and seems to stress out the other fish. Oddly enough he does this mostly to the mollies (which he cannot breed with), but leaves the swordtail (which he can breed with I believe) alone most of the time. What should I do? I don’t want to re- home him, and I don’t even know if the pet store would take him back. Any advice would be greatly appreciated.