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Common names

Members of the family Loricariidae are commonly referred to as loricariids, suckermouth catfishes, armoured catfish, or suckermouth armoured catfish. The name " plecostomus ", and its shortened forms "pleco" and "plec", are used for many Loricariidae, since Plecostomus plecostomus (now called Hypostomus plecostomus) was one of the first loricariid species imported for the fish-keeping hobby.

Some loricariids are not normally considered "plecostomus", such as Farlowella catfish.

In their native range, these fish are known as cascudos or acarís.