Red Syngonium plant (sometimes called Nephthytis); is the species "Syngonium podophyllum".
You'll love this heart-shaped leaves with a red blush to add height in your arrangement! Easy care, and undemanding.
They are equally at home in a bog, Paludarium hybrid set-up, however!
Syngonium need a bright window, without direct sunlight. You'll scorch the leaves in a sunbeam! Mine do very well under a covered porch in the summers here in Kansas.
If you'd like to transition these to a swamp or boggy tank, I would suggest slowly acclimating these guys to a much more damp environment over a matter of weeks. Water daily, so the plant gets used to having a lot of water around. Perhaps place the pot in a shallow few inches of water in the last few days. Finally, remove the plant's roots from the potting soil, and giving them a gentle wash before landscaping in your riparium set up!
As in the sample photos above, there will be some variation in size and branching. It's just the nature of the beast. The ones I send to you WILL be healthy, happy, growing merrily, and be ready to go!