Catfish(鲇鱼):
In Chinese, it is pronounced as: nián yú，Written as:

The catfish, a species from the order Siluriformes and family Siluridae, is also known as the pond loach. It has a laterally compressed body with a flat and soft abdomen that can expand and contract. The body is taller than the head, and its external outline resembles a chisel shape; the head itself is flat, and the mouth is wide. The mouth has a shallow cleft and is slightly upturned, ending just before the front edge of the eyes; the lower jaw protrudes, and both jaws along with the vomer are densely covered with bony, fine teeth, forming a continuous band. Juvenile catfish have a light gray back, while adults have a dark gray back and a grayish-white chest. In clear water, their backs appear gray-green, and in deep water, they turn an oily yellow.
Catfish are distributed from the Heilongjiang to the Pearl River systems in Eastern Asia, including parts of Russia, Japan, and the Korean Peninsula. They inhabit reservoirs with abundant aquatic vegetation and muddy bottoms. During the day, they tend to hide in deeper waters, becoming more active at night or dawn to feed. In autumn, they dwell in deeper waters or mud to overwinter and reduce their feeding intensity. When feeding, they do not school but hide among the crevices on the riverbed, able to spot and capture prey from a distance. They are carnivorous, feeding on small benthic fish near the shore, as well as invertebrates, larval aquatic insects, and the nymphs of mayflies and dragonflies. Typically, they spawn between April and June, laying large, sticky eggs in batches of 3,000 to 5,000. Their lifespan is generally 4-5 years.