To stay away from that, especially in smaller tanks, you may play it Safe and sound and only get 1 male specimen with 3 women. Should you’re just beginning while in the hobby and need to do that fish out, then you should in all probability read through this guide https://pearlaquatics.my/product/proguard-pg3500-pg4500-pg5500-2-in-1-amphibious-water-pump-aquarium/