I can't quite tell from the pictures, but that hygro could be Hygrophila balsamica.
Google it and see if it matches, Its quite poisonous when grown emersed and there have been cases of when submerging, it killing some sensitive fish in the aquarium. (Though I have never had that happen when I grew it)
RAOK CLUB #12
Wabi-kusa Pimp #1
"99% of the time, a fish tank with plants will fail. Once you start a dedicated planted tank with fish, then you begin to succeed." - Geniusdudekiran