1, morphological differences: the appearance of prawn is similar to that of Penaeus monodon, with thorns on the forehead and five pairs of feet on the abdomen. The body is stiff and curved, and the internode shells of prawn are separated from each other and can stretch freely. Metapenaeus ensis has 6-9 teeth on the upper edge of the frontal angle, without central sulcus, and the first pair of gait feet have seat joint thorns, while the last pair of gait feet have no external limbs.
2. Origin difference: prawns are mainly distributed in the Yellow Sea, Bohai Sea and other places in China. Lushun, Hebei, Shandong and Tianjin coastal areas are important producing areas of prawns, and the fishing seasons are spring and autumn. Metapenaeus ensis is widely distributed in the coastal waters south of Shandong Peninsula in China, as well as in the Philippines, Indonesia and Australia, and its spawning season is from May to August in China's coastal areas.
3. Nutritional difference: Macrobrachium nipponense is fleshy, delicious and rich in protein. Metapenaeus ensis has a thin shell and fat body, tender and delicious meat, and contains more calcium and zinc, which is also a high-quality source of protein.
4. Different colors: The body of Macrobrachium nipponense is smooth and transparent, the female body is bluish blue, and the male body is brownish yellow, while the young shrimp in metapenaeus ensis is dark green to dark green, and the adult shrimp is light brown yellow.
5, the taste is different: when tasting, the taste of prawn is not crisp or sweet; Metapenaeus ensis's taste is delicious and refreshing.