I'm pretty sure that the one with the white/silvery markings on it's leaves is an aluminum plant and is not aquatic. You should ask about the ID of your plants in the plant section, because you will probably get more responses there. I can't see the pics anymore since I'm in reply mode, but I'll look again and edit my post accordingly.
EDIT:
It looks like there is a purple waffle plant to the right of the aluminum plant, which is also not aquatic. Is it possible for you to get close up shots of the plants, where we can see the whole structure of the plant. That might give us more to go on.