1, shape: metapenaeus ensis is small, usually only 8- 16 cm, with light brown body color and dense light spots on the surface. Black tiger shrimp is relatively large, usually between13-20cm, with dark blue or black body color and dark horizontal stripes on its surface.

2. Origin: metapenaeus ensis is mainly produced in the coastal areas of China, while black tiger shrimp is mainly produced in Southeast Asia.

3. Taste: metapenaeus ensis is delicious and tender, suitable for steaming or frying. Black tiger shrimp's meat is fuller and more elastic, suitable for cooking soup or barbecue.