x 1 to what onefish2fish said.
If the bamboo leaves are sticking above water, but the stem is in, it will thrive quite well. But if the leaves are suspended UNDERwater, the plant will ever so slowly rot. I heard they can last up to a year, but no more than that. It would look good for a betta or goldfish in - no need for filtration if you put enough in, they still soak up nitrates and whatnot. =]