The Java Fern has very distinguished characteristics from most other aquatic plants.
More than just beautiful, this plant is quite undemanding and easy to cultivate, even doing well in poorly lit tanks and without extra nutrients or CO2.
It's also an ideal plant to use in setups that contain burrowing or vegetarian fishes, since in general they will not disturb it.
This plant should not be buried in the gravel, but rather fixed to rocks and driftwood, leaving its roots loose in the water.
The roots eventually attach themselves to the rock or wood.
When well adapted, it reproduces easily, and the reproduction is quite interesting:
the daughter plants are born on the edge of the leaves of the mother plant and grow right there, clinging on it with their little roots.
With time the daughters grow until they release themselves from the mother, and float around until they get entangled on something.
The hairy roots adhere easily.