The pink in the stems makes me think it is not Hygrophila angustifolia.
The leaves are too narrow IMO Hygrophilia corymbosa v. 'Stricta'
Hygrophila costada does get red stems, but only while emersed, at the same time the emersed leaves get red veins. This one does not have the red veins on leaves.
Hygrophila salicifolia I am not very familiar with this one, but it is certainly a good candidate for what that plant it. Almost everything fits.
That said, plants are so variable from tank to tank. I have had a plant I was convinced was one thing in one tank, and thru it in another tank and it looked different enough for me to change my mind on what it is.