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Upside-down catfish, Synodontis nigriventris, is a species of catfish. It's particularly noteworthy because of its habit of swimming upside down most of the time. Upside-down catfish originate from the Central Congo basin of Africa.

Upside-down Catfish

Upside-down catfish, Synodontis nigriventris, is a species of catfish. It's particularly noteworthy…