The Suckermouthe Catfish (Hypostomus punctatus) is a tropical fish known as a Plecostomus belonging to the armored suckermouth catfish family (Loricariidae). Hypostomus punctatus is a freshwater fish native to South America, in the coastal drainages of southeastern Brazil. It is one of a number of species commonly referred to as the Common Pleco by aquarists.