"These fish are mostly nocturnal, and feed on insects, crustaceans, and plant matter. These fish lay eggs. The young fish do not swim upside-down until they are about two months old."@en . . "Least Concern"@en . . . "Blotched Upside-down Catfish"@en . "Congo Basin of Cameroon, the Democratic Republic of the Congo and the Republic of the Congo."@en . . . . "Blotched Upside-down Catfish"@en . "LC"@en . . . . . "These fish are mostly nocturnal, and feed on insects, crustaceans, and plant matter. These fish lay eggs. The young fish do not swim upside-down until they are about two months old."@en . "S. nigriventis"@en .