Is this Java Fern? Plant ID please

I have a new 15 tall up and running with 3 happy healthy danios, an amazon sword, radican sword, jungle val and corkscrew val. I got this other small hitchhiker in on my radican sword roots. The closest I can tell it's some kind of java fern - but it looks almost like the land plant staghorn fern. Anyone got ideas? Since this picture I have uprooted it and allow it to float so I haven't covered the rhizome if it is Java.
The first picture is my full aquarium(note the unknown plant is tiny in front of the castle). The second is the unknown plant.

Thank you Quartermain. Heh, I almost bought some regular Java fern and decided against it - I guess this little guy knew to follow me home.:grinyes:

Yeah, I know - that's why it's floating now - I just can't get a good picture while it's floating around. I'll tie it to my driftwood sometime soon.