Alias: alien king, sucker fish, miscellaneous fish, anglerfish, pipa rat fish.

Family and genus: Siluridae

The sweeper has a huge body, flat head, high dorsal fin, flat tail and developed lips, like a sucker. General 10-40 cm, the whole body is covered with scales and the body surface is rough. The body is grayish black or light brown with black and white patterns on the body surface. Strong physique, easy to raise. The inlet water temperature is 22~28℃, and the water quality is weak alkaline hard water. The bait is mainly algae, but also live food. In the aquarium, it is often adsorbed on stones and glass to stabilize the body, suck algae and look for benthic animals (such as water worms). It is a loyal "cleaner" in the aquarium. It belongs to nocturnal fish and can be mixed with healthy fish. It is difficult to breed in an aquarium. "Scavengers" are omnivorous fish, which can eat 3,000 to 5,000 eggs a day and swallow a large number of fry, threatening the reproduction and growth of other fish. At present, scavengers have no natural enemies in rivers.