The Echinodorus "Red Diamond" appeared in Ukraine and is perhaps a cross between Echinodorus horemanni "red" and Echinodorus "Barthii". The resulting hybrid is an attractive plant with sword-shaped ruby leaves, 15-25 cm long. Unlike many other Echinodorus, the Echinodorus "Red Diamond" remains moderate in size (20-30 cm wide), making it extremely suitable as a focal plant, even in small aquariums.

Increasing the nutrients in the substrate boosts growth, while favorable lighting conditions promote the formation of the ruby leaves.