Alternative name: Black Shell Shrimp.It is hardy, has a fresh taste, and is large in size, being the largest species within the shrimp genus; the largest female can reach up to 33cm in length and weigh over 500g.It is omnivorous.Water caltrop is warm in nature and sweet in flavor, entering the liver and kidney meridians.The meat of water caltrop has effects such as tonifying kidneys and enhancing yang, promoting milk secretion and detoxification, nourishing blood and consolidating essence, resolving stasis and detoxifying, invigorating qi and enhancing yang, unblocking channels and relieving pain, aiding digestion and resolving phlegm.It is suitable for people with kidney deficiency, erectile dysfunction, seminal emission, obstructed milk flow, bone and muscle pain, tetany, general itching, skin ulcers, physical weakness, and neurasthenia.