Synodontis nebulosus, known as the cloudy squeaker, or clouded squeaker, is a species of upside-down catfish that is native to the lower Zambezi River basin of Malawi, Mozambique, Zambia and Zimbabwe. It was first described by German naturalist and explorer Wilhelm Peters in 1852, from a specimen collected in the Zambezi River at Tete, Mozambique. The species name nebulosus is derived from the Latin word nebulosus, meaning "foggy", "cloudy", or "full of mist".

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