Please help to ID this plant

[Unmarked]

Hi all

Please help me to ID the plant in the attached photo.

20131224_170741-2.jpg

Bought in at C328 to put into my betta tank temporarily while waiting for my new tank to cycle. However, it seems to be doing very well even without proper lights. Can this plant be planted directly into the substrate? Thank you!

[Kiang]

Look like amazon sword plant


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