Eel, also called yellow eel, is long and snake-like.The head is elongated and round.The mouth is large, terminal, with the upper jaw slightly protruding, and well-developed lips.There are fine teeth on the jaws and roof of the mouth.The eyes are small, covered by a thin skin.The gill openings on both sides merge into one on the underside, forming an “~” shape.V”Character shape.The gill membrane is connected to the gill arch.The body surface generally has slippery liquid for easy escape and lacks scales.There are no pectoral or abdominal fins;Dorsal and anal fins are reduced, only leaving skin folds without soft spines, which are united with the caudal fin.When alive, the body is mostly yellow-brown, slightly yellow or orange-yellow with dark gray spots; some eels can be white, known as “white eel”..
