Plant?

[Bob_99]

I've got 7 or 8 of these little fuzz balls in my tank. The only "plants" I put in were 3 moss balls and a little hair algae. Don't know what these are or where they came from. Also included a pic of one of my berried females.

[Keystone]

Kind of reminds me of fungus that grows on uneaten food.

[Mustafa]

It's definitely some type of algae. With so many spores everywhere it's hard to say what it may be. Just keep an eye on it and update this topic if you see it proliferate and/or grow.