The image shows a sign/label for Heteranthera zosterifolia. but the larger foliage does not match that plant so the image is misleading.
I have not yet found an image that is not protected by copyright but I could take a photo at an aquarium store as this is a popular aquarium plant.
Here is a link to an image of H. zosterifolia showing the correct foliage at the Copenhagen Botanical Garden:
Image at Plantsystematics.org
Doing a Google Image search omitting 'Copenhagen Botanical Garden; the result shows the H. zosterifolia:
https://www.google.com/search?...
Thank you
