I know its been about 4 months since our 9 guppy babies were born, and they've been thriving well. No deaths yet. That fish tank was pretty bad luck for the first few weeks we had it. Well, turns out all the brothers and sisters smooshed in that tank must really love each other, because we have another baby in it! I knew one of the sister guppies was preggers, cuz she's HUGE, and only one baby came out. LOL I guess she carries the baby weight like I do!