QUOTE (Graeme @ Mar 9 2010, 06:56 PM)

My guess
1 Java Fern
2 Sword ( unknown )
3 Ambulia
Graeme
Hard to see which sword from the pic, but I'd take a punt on Echinodorus cordifolius, what used to be called radicans, due to the size, sparseness of leaves, and how common it is, certainly it matches the other two plants in that respect.