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1. Grass shrimp, also called green shrimp, is a common freshwater shrimp. Live in freshwater environments such as lakes, rivers and ponds. The body color of grass shrimp is gray-green or brown, with a short body, large pincers and slender antennae. Grass shrimp is relatively small in size and delicious in taste. It is a common edible shrimp.

2. Black tiger shrimp, also known as hairy crab, is a kind of freshwater crab. Live in rivers, lakes, and water bodies connected to them. The body color of black tiger shrimp is dark brown or black, with a chubby body, a hard shell and large and strong pincers. Black tiger shrimp has delicious meat and is one of China's famous specialty aquatic products. Therefore, grass shrimp and black tiger shrimp are not the same species.