Hello! I have a lucky bamboo, The thing is, I cant find what it is called and it is different than others, others are paler green with these downward triangles of darker green on it, Mine is pure green, and it is getting greener as it gets older. I have had it for a year now and it's stalk is just a bit taller than the stick now, do i have to worry about it getting too tall? Am i supposed to prune it?

This plant was the plant that got me into gardening so i would really like to keep it as long as possible =)

Thanks for the help!