Tachysurus fulvidraco, the yellowhead catfish or Korean bullhead, is a species of bagrid catfish found in eastern Asia from Siberia to China, Korea, Vietnam, and Laos, where it can be found in lakes and river channels. It can reach a maximum length of 34.5 cm (13.5 in), weighing 3 kg (6.6 lb), though it is much more commonly found to a length of 8 cm. It is a minor component of commercial fisheries.

Parasites

A total of 11 species of helminthes, including six species of digeneans, three species of nematodes, a species of cestode, and an acanthocephalan have been found in the stomach and intestines of T. fulvidraco:.