Silurus glanis Linnaeus (catfish family); common name: catfish; distributed in Eastern Europe, Central Asia . Body length up to 500cm. six-bearded catfish Body long and scale-free, wide flat head on a surprisingly wide mouth, which is full of rows of sandpaper-thin teeth, there are hundreds of them. They have a set of tentacles (gills-like organs) in each of their upper and lower jaws to help them catch their prey in chaotic waters, and so they are found in the great lakes of Europe as well as in rivers that do not have strong currents. Six-bearded catfish is an experienced hunter, usually living underwater, in the surface of the water when there is a sound quickly up to hunt, usually near the river bank to hunt. European giant catfish hunting first pectoral fins, creating a whirlpool so that the prey lost direction, and then open the huge mouth, like a vacuum cleaner as the prey sucked into the mouth, swallowed whole. The head is flattened, with the lower jaw protruding from the upper jaw. There are 3 pairs of whiskers, the first pair of chin whiskers are shorter. Pectoral fin spines are strong, and the body color varies greatly according to different living environments. Body long and scale-free, wide flat head on a surprisingly wide mouth, which is full of rows of sandpaper-like fine teeth, as many as a few hundred. Large fish, ferocious, carnivorous. Widespread in Europe, in our country is still the first record, only seen in the Ili River in Xinjiang, possibly due to the introduction of the former Soviet Union in Lake Balkhash.