i have 3 female and 1 male swordtail. i know for a fact all of the females are pregnant. i had one of them give birth 4 days ago so she is not looking like it but still has her gravid spot. but anyway my really pregnant swordtail is fighting with the mother of the new fry who sadly died. we were not prepared for them cause we got her the day before.we new she was pregnant but didnt know they would come fast. so the baby fish were eaten by our other fishes.
so what should i do is this normal for pregnant fish to fight?