Java Fern Leaf Roots?

I planted these narrow-leaf Java ferns a couple of weeks ago, and they're sprouting roots from their leaves!

This is my first time with this plant-- is this normal? Do they want to be planted?

Thanks

 

The black spots on java fern leaves are reproductive spores. Let the plantlets get at least 3 inches until you pull them off the leaves.

 

Basically they forming new plants. You'll see leaves budding shortly, and once they have 2-3 leaves, you cab pluck them off and grow them elsewhere!

 

That is so cool! Thanks for the info!

 

I've got two Java Ferns that are doing this. They seem to be growing way faster than the actual plant. I'm following the advice from DutchAquarium above. I'm going to wait until they're about 3 inches and then cut and plant them elsewhere.