1, Macrobrachium: it is a kind of river shrimp, brachiopod, with black, brown and green stripes on its body surface, and it is relatively large. The male Macrobrachium rosenbergii can reach 400 mm, and the average Macrobrachium rosenbergii is about 50-100 mm.

2. Shrimp: It is a kind of marine shrimp, belonging to the family Penaeidae, with a flat body and a developed abdomen. There are epigastric spines, antennal spines and hepatic spines in the head and breastplate, and there are obvious antennal spines, posterior frontal spines and lateral spines. Some species also have hepatic spines, and the posterior frontal spines have central sulcus.