Loricariidae, commonly known as catfish or armored catfish, is a family of freshwater fish native to South America. They are characterized by their flattened bodies, bony plates, and whisker-like barbels. These fish are often found in rivers, streams, and lakes, where they play a vital role in the ecosystem by feeding on algae and detritus. There are over 150 species within the Loricariidae family, including popular aquarium species like Plecostomus. They are known for their ability to thrive in various water conditions and their unique adaptations, such as the ability to breathe air through specialized structures.