The plecostomus, commonly known as the suckerfish or algae eater, is a freshwater fish native to the rivers and streams of South America. It belongs to the family Loricariidae and is recognized for its distinctive flattened body and sucker-like mouth, which it uses to cling to surfaces and feed on algae. Plecostomus are popular in the aquarium trade due to their ability to help control algae growth. They can grow quite large, with some species reaching up to 24 inches in length. These fish are generally peaceful and can coexist with various other species in a community tank.