Bad Wolf

I have a batch of baby mollies that are about 4 or 5 weeks old. i put one in with the other fish to see how it would go. it got eaten by my 7 cm (3 inch) angelfish. i was told they could be release at 12 weeks with angels.

when would be the right age to release the babies without the angel eating them?

i also have dwarf gourami, when can i release the fry without this guy eating them?

the are the only ones who are interested in them so far.

i also went to the pet shop today and they have a batch of baby guppies that were a day old in the main display tank and the weren't getting eaten by and of the fish. if i didn't these two fish would i have to separate the babies at all?

will a 10 cm goldfish, a 7 cm rainbow shark or a 7 cm tandanus catfish eat a new born molly/guppy fry?

thanks for all answers

Nick G

It's not really about age but size. Basically when they're too big to be eaten by the other fish in the tank it'll be fine to release them.