Linda Olson just told me that its water sprite, too. I have a ton of water sprite, then. xD I think its cool how it branches, too! I like how the leaves look wayyy different above water than under it, lol.
I'll also have more java moss soon as well, since it grows so quickly. I just transferred a bunch of it over to a few other tanks. Like, four handfuls worth. I'll probably end up accidentally giving someone duckweed, though, since its pretty much populated my tanks.
I'm weird and think duckweed is cute, though. Especially from the side, right under the petals. Its just so tiny! <3