Can anyone tell me what is growing off of the bottom of these leaves? its not covering the plant but there are several brown fuzzy root things coming off of it. any help is much appreciated
Looks like roots. Not of the Java Fern itself but its plantlets. Eventually they should start getting leaves and then the little parasites (well technically...okay they arn't really 'officially' parasites :grinno will detach and become new Java Ferns.
You also need to pull the base (rhizome) of that fern out of the gravel. It most likely will rot if buried. Better yet, tie the fern to a rock or driftwood.