Suckermouth catfish

Suckermouth catfish may refer to:


 * Any species of armored catfish (family Loricariidae), most notably:
 * Hypostomus plecostomus, and Hypostomus punctatus, two species of armored catfish popular with aquarists
 * Any similar species marketed under the name "plecostomus" or "pleco"
 * Sailfin suckermouth, usually Pterygoplichthys gibbiceps