Eight-bearded catfish, a unique aquatic product under the pier of Dacheng, lives in the lower reaches of Yutang River. You can't go up to the sand spring dam or get down to the black jar. It has been hidden in shallow pebbles for years and feeds on tiny free animals. The longest adult fish is 150 cm, its abdominal circumference is 5 cm, and it generally weighs 30-50 grams. The head and abdomen are like catfish; The body and tail are like loach; Back grayish brown; The abdomen is milky white; No scales, single spine, loose abdominal ribs. It is famous for its tender meat and delicious taste.

The catfish with eight whiskers is unique in that it has eight tentacles. Generally speaking, catfish has four beards, while its sister species, Yellow Duck, has only six beards. Octopus in Dachengqiao River mainly lives in unique water source conditions. Groundwater overflows from the upper and lower spring pools and the sand spring dam, giving it a clean living environment and breeding.