Many Thanks for this, I think its a little small for Ceratopteris thalictroides, looks very like it though it could be Ceratopteris siliquosa from pics on the internet, whether its the same plant I am not sure.
Looks very nice, as long as it does not grow too big.
and here's a classic site I found while searching - check out the photos of "A modern treatment with a wrought-iron stand and driftwood plywood shadow frame. Back of aquarium is covered by bamboo matting" and other classics! http://www.aquariumdecoration.net/aquar ... tion06.php