1, different in body shape and appearance. Wild eels are smaller and generally thinner than farmed eels. The backs of wild eels are green, with a metallic luster, and their bellies are yellow; while artificially cultured eels are larger and have thicker meat, with gray-black backs and a yellow belly. is white.

2. Distinguish in taste. Wild eel has a strong fishy smell, firm meat, delicious taste and great nutritional value; while artificially cultured eel tastes much worse, with loose meat. In the words of buyers, it is like chewing cotton, soft and not chewy.