Because of its strong drought tolerance, scavengers are revived as soon as they encounter water, and their vitality is also very tenacious. Most scavengers die from lack of food, sudden temperature change or disease. If you stay in the sun for a day or two, you won't die. However, the sweeper cannot be revived in the water at any time. After the sweeper is dried, it can be revived in the water for a short time. However, when the sweeper is completely dry and has no vital signs, it is generally impossible to revive in the water.

The scavenger is an animal of Silurus of Silurus. Rivers native to South America. The fish body is semi-cylindrical, the tail fin is shallow and forked, and it likes weak acid and soft water. The suitable water temperature is above 20℃, so adult fish can't overwinter naturally. It moves at the bottom of the water body, likes to eat the bait and dirt left by the aquarium, and can purify the water quality. Scavenger fish fish is streamlined, with small eyes, low mouth, protruding forehead and thick kiss. The upper and lower lips have left and right teeth respectively. Teeth are brush-like. There are 1 whiskers on the left and right. A comb as dense as a gill rake. The whole body is covered with black patterns with clear black stripes. The base of pectoral fin can make a sound similar to that of Pelteobagrus fulvidraco. There are 2 dorsal fins, no lateral line scales, and only 4 rows of large scales on the side.