Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
If you can find similar plants to the fake ones you have in there I think they will grow OK in gravel.
Valisneria is the narrow strap shaped leaves, sort of like grass. Grows in pretty much any substrate.
The stems with the finer sort of leaves might represent any of several plants, perhaps Cabomba, Myriophyllum or other. If there is enough light Cabomba ought to grow OK.
An easier plant sort of like this is Hornwort. I have found it grows best in hard water.
Add in the Java Fern and Anubias and I think your tank will start to look pretty good.
What sort of light do you have?