is there a certain plant that will give my guppy oxygen for ...

is there a certain plant that will give my guppy oxygen for a science thing i am doing? we are not allowed to open the jar until 3 weeks later, and im trying to keep the fish alive as long as possible. any suggestions?

I'd look at the local aquarium store for a fast growing plant (we used one when I was in school that we called elodea, but I've seen it in stores by another name). I'm a little concerned about the design of this experiment--I hope there is an instruction to open the jar if the fish appears not to be healthy and thriving, so that it doesn't suffer and asphyxiate if the balance isn't right. Allowing it to die shouldn't be one of the possible outcomes. Also, plants need a good amount of light of the correct wavelengths to produce oxygen, and remember that at night, plants take in oxygen for respiration when they can't photosynthesize.

+1 for Marina! That doesn't sound like a very good experiment.

yea I always hated science class... it sounds kinda like when I had to cut open a frog. not only was that gross, but it was cruel too. either way If you got a plant you might want to try some type of algae or fox tail. algea produces a lot of oxygen and can live in anything but it also takes awhile to grow. foxtail can be found at any petstore. I'm not sure how much oxygen it produces but I understand it's very very benifical to fish so it's worth a shot. if in doubt you could always tell your teacher you refuse to bring harm to the guppy and ask for a diffrent asignment.