FishChecker

The Upside-Down Catfish (Synodontis nigriventris) is a truly fascinating and unique freshwater fish, renowned for its peculiar habit of swimming almost exclusively on its back. This charming African species, native to the Congo River basin, has adapted its physiology to this unusual orientation, with a darker belly and lighter back providing excellent camouflage against the water's surface from predators below. Reaching a modest size of about 3-4 inches (7-10 cm), they feature a distinctive mottled brown and cream pattern, large eyes, and delicate barbels around their mouth, which they use to forage for food. Peaceful and social, Upside-Down Catfish thrive in groups of three or more, displaying more confidence and engaging interactions when kept with their own kind. They are an excellent choice for community aquariums, coexisting well with other non-aggressive, similarly sized fish. An ideal setup includes a well-planted tank with plenty of hiding spots such as caves, driftwood, and rocks, mimicking their natural environment. They are omnivores, readily accepting a varied diet of high-quality flakes, pellets, frozen, and live foods. Maintaining stable water parameters (pH 6.0-7.5, temperature 74-82°F / 23-28°C) is key to their long-term health. Their unusual swimming style and hardy nature make them a captivating and rewarding addition to any freshwater enthusiast's collection.