Caulerpa Serrulata -Razor Grass-

This is another fast growing caulerpa that has an attractive bright green color acompanied by its ridged serrated blade like leaves.is like to grow on fine sand substrate but will gro in rock as well spreading along its rhizome.like most macro algaes rooting into sesile invertabrates is undisirable so train or trim as needed.will trade.[img][/img]

Is there a plant that looks similar to this very cool micro algae that grows in freshwater?

i dont believe so. i do like the brmble look this starts to get as it grows.hmmm.let me think on a similar plant...

Is that one legal? I know some arent. I just cant remember. Racemosa, prolifera, serrulata, or taxifolia