1. Monopterus albus is not an eel. Eel refers to the general name of species belonging to eel classification. Eel is a snake-like fish, but it has no scales. It is generally produced in the waters bordering fresh water in Yuxian County. Monopterus albus belongs to Syngnathidae, Syngnathidae and Monopterus albus. Also known as Monopterus albus, _ fish, Luo eel, snake fish, blood eel, common fish and long fish (northern Jiangsu).

2, eel, eel. The body is slender and snake-shaped, with a body length of about 20~70 cm, the longest 1 m, flat front and back, and a tail tip. The head is long and round. The mouth is big, the end position, the upper jaw is slightly prominent, and the lips are quite developed There are fine teeth on the upper and lower jaws and flap bones. Eyes are small and covered with a thin layer of skin. The head is thick and the tail is thin, and the body surface is protected by smooth mucosa. It is scaleless, yellow-brown, and its body has irregular black spots. The underdeveloped fins basically disappeared, and there was only one triangular thorn in the whole body, which was less fleshy. The meat is tender and delicious.