I just started my first community tank this month. I have larger more aggressive tanks, but this in my first community tank. I bought fancy tail guppies and there are 4 very pregnant females. They have very dark black spots. I did research on the web but I still have a question. Do I need to seperate them from the other fish, a tank divider or something? The male guppies are chasing them all the time, does this cause stress to the female? I floated plants at the top of the tank, like I read about. There are also Red-nosed rummys and different types of neons in the tank. Thanks.