Pleco

Plecostomus, pleco, or plec refers to several species of freshwater loricariid catfish commonly sold as aquarium fish:


 * Hypostomus plecostomus
 * Hypostomus punctatus
 * Pterygoplichthys multiradiatus
 * Pterygoplichthys pardalis
 * Ancistrus cirrhosus

Pleco may also refer to:
 * Pleco Software, an English↔Chinese dictionary application for iOS and Android devices, which uses the traditional Chinese character for "fish" (魚 yú) in its icon.