Not much. Channel catfish, commonly known as "Qingjiang fish", is native to North America. It was introduced from the United States in 1984, and belongs to the bottom omnivorous fish. Its meat is tender and nutritious. Channel catfish has only one main thorn and no other small thorns. Because it has no phosphorus and small thorns, it has become a standard in grilled fish shops in recent years, and it has been made into many dishes such as braised fork tail, steamed fork tail and spicy grilled fish.