Synodontis membranaceus, known as the moustache catfish, is a species of upside-down catfish that is native to northern Africa. It was first described by French naturalist Geoffroy Saint-Hilaire in 1809 as Pimelodus membranaceus, from specimens obtained in the Nile River. The species name membranaceus refers to membranes present on the barbels of the fish.

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