I've got far too much of this plant and far too many of this fish. I've kind of let things be in my FW tank and these two in particular have totally taken over.
Vallisneria spiralis (corkscrew variety)
Vallisneria_spiralis.jpg
(Sorry for the lousy picture.)
Here's some info on this plant:
http://www.aquahobby.com/garden/e_spiralis.php
Ameca splendens
Sorry, no pics of the fish. They're too fast and I'm too impatient... Here's some info though on them:
http://www.thekrib.com/Fish/ameca-splendens.html
http://www.aquaworldnet.com/awmag/gooden.htm
They're supposed to be a good algae eater. I have basically zero hair algae in my tank so it might be true, I can't really say.