Without sounding too morbid, I know someone who I'm relieved just died.
This person did not have the best life. She was constantly isolated and impregnated by her partner. He would stay demandingly close to her at all times, both keeping her pregnancy safe as well as denying her contact with anyone else in her environment. His intentions were not cruel, simply driven by nature.
The worst of it all was that when her pregnancy came full term, all of her offspring were instantly consumed in a feeding frenzy by the others which he tried so hard to protect her from. For this he made a better lover than a father. The couple, not knowing where to procede from this disaster, simply attempted again to procreated and repeated the cycle.
This happened no less than 3 times.
She finally succumbed to whatever it is that fish succumb to, and sunk glossy-eyed to the bottom of our tank.
The male, now without a partner to school with or mate with, swims alone by the heating element.
Do I go get another female platy to appease the male, saving him from a life without purpose yet dooming the female to a tormented cycle of pregnancy and infanticide?
Nature is an interesting dynamo, even the little 10 gallon portion of it I tend to in my apartment.