The Suckermouth Catfish, also known as plecostomus, is a freshwater fish native to the rivers and streams of South America. It is recognized for its distinctive flattened body and sucker-like mouth, which it uses to cling to surfaces and feed on algae and detritus. These fish can grow up to 24 inches long and are popular in home aquariums due to their ability to help keep tanks clean. Suckermouth Catfish are primarily nocturnal and prefer to hide in caves or under rocks during the day. They are generally peaceful but can become territorial, especially during breeding. Their diet mainly consists of plant matter, making them an important part of their ecosystem.