My female Molly is aggressive. I fear for her mates.
 

I put 2 other Molly females to outnumber the male. She killed them both. And she looks pregnant. In the past I had Lake Tang cichlids & the same thing happened. The killing. But she wasn't aggressive. Separating her isn't an option.
Is there something I can do ?
Anybody experience this ?

rehome her.....unfortunaely if she is that aggressive...never had molly aggression issues, that may be your only option or take her back...