Toadlets.

[Deku]

They are so young they should be fine if you release them, it's doubtful they'll have anything. They are very right though, any caught animal released back into the wild after any length of time in captivity risks spreading some bacteria or microb picked up while inside or from food provided to them. Fish food for example.

You've already said it yourself, they where exposed somehow to some parasidic worm already. Who knows where that came from, the parents, water brought in from inside, or some thing else introduced during the growth cycle.

And please get off this kick that you are "helping them breed", helping them breed would have been leaving them where they where and letting the natural cycle take it's place. Breeding two adult toads that are free of parasites and other nasties is another matter.

If you do keep them outdoors in a tank be sure it's sealed and not just with some filmsy mesh top either. Any racoon or opposum worth it's weight will break into that with ease to get at the fruit and the toadlets. They'd have a better chance in the wild then as sitting ducks in a little tank.

Well like I said I guess I was misinformed in general. We used to do this a lot for bio class when I was in school. Teacher told us and I quote "its helping them get a jump start because in nature they would easily become prey to other many animals". So my intention wasn't to hurt anything. Just to have some fun at a project I once did in high school. I didn't think it'd cause any problems for the toads themselves or for nature...
The parasitic nematodes were completely killed off. They were introduced through some pond water I believe.. From the very same pond I took the adults from. i had gone there and taken a large water sample

P.s. alot of people where I live basically do the same project where they take in wild tadpoles and watch em grow and then let em go.