Macrobrachium macrobrachium is also called Pujiang Dahe shrimp or Baihe shrimp. Macrobrachium macrobrachium is a euryhaline shrimp. Its larvae live in the salty and fresh water areas of the estuary, and their feeding habits are mainly omnivorous, with occasional cannibalism, mainly due to food shortage. Macrobrachium macrobrachium requires higher dissolved oxygen than other freshwater shrimps, and likes to live in streams and beaches with fresh water, so the culture environment requires higher requirements. It mainly lives in the southern coastal areas, and its individual is relatively large, but its meat taste is very delicious, and its body color is mostly white and transparent.
Prawn is a kind of marine shrimp, also known as China prawn and Oriental prawn, belonging to Arthropoda, Crustacea, Decapoda and Penaeidae. It is called "the three famous shrimps in the world" together with Mexican brown shrimp and Guiye white shrimp. Fleshy, delicious and rich in protein. Prawn lives in shallow water sediment layer and migrates to spawn in spring. An important substance in prawn is astaxanthin, which is a component with a red surface. Astaxanthin is the strongest antioxidant found at present, and the darker the color, the higher the astaxanthin content.