Hi there!!
This is my first time having fishes as pets. I just got three Guppies to start but the Female already got Guppy babies!!! They are a lot like 13 of them . The first thing I did was to separate the babies from the adults but I want to change the water where the Guppy babies are, does anyone know if I can do so? if so, how? I hope I can take care of them because from the three adults one of them died, I didn't know why; I went out and then come back home I found a dead fish

Please help!!! thanks