"I was wondering how to keep piranha fry I want to know the tempurtature, the ph, what to feed them, etc."
1) depends on how many you have, usually 10g is enough or a 20g. Temp would be same for adults 78-82F. pH same as adults . 6.8-7.4. Feeding depends on size; rotifers for new born, graduate to brine shrimp, then guppies lots of them. Then flake food. And old method was feeding baby fish the food that is as large as the eye diameter they have.
1) depends on how many you have, usually 10g is enough or a 20g. Temp would be same for adults 78-82F. pH same as adults . 6.8-7.4. Feeding depends on size; rotifers for new born, graduate to brine shrimp, then guppies lots of them. Then flake food. And old method was feeding baby fish the food that is as large as the eye diameter they have.