The Proserpinaca Palustris is great for both ponds and aquariums!
Mermaid Weed, also known as 'Saw-Tooth Hygro', can make a dramatic statement in any aquarium under the right conditions. Its leaves start out a vibrant green color with choppy, serrated edges. When grown under high-intensity lighting, the leaves will become more bristle-like. The leaves will gradually change from green to pink and golden.
The Mermaid plant can be difficult to grow and maintain, so it may not be ideal for beginners in the hobby. If kept under insufficient lighting and/or water lacking in nutrients, Mermaid Weed tends to shed its leaves. CO2 injections will ensure a highly thriving plant.