A robust and adaptable African catfish often mistaken for the true Upside-Down Catfish (Synodontis nigriventris). Unlike its smaller cousin, S. nigrita grows quite large (up to 20-22cm) and adults rarely swim inverted. They are nocturnal scavengers that are generally peaceful towards larger tank mates, but their predatory nature means they will consume small schooling fish (like Neon Tetras) at night.
Common Synodontis (False Upside Down Catfish) At a Glance
Common Synodontis (False Upside Down Catfish) Tank Requirements
Will Common Synodontis (False Upside Down Catfish) fit in your tank?
Care guides tell you what Common Synodontis (False Upside Down Catfish) needs, the next question is whether your tank can safely provide it. Test Common Synodontis (False Upside Down Catfish) against your tank size, maintenance needs, and the fish you already keep before you buy.
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Common Synodontis (False Upside Down Catfish) Water Parameters
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Common Synodontis (False Upside Down Catfish) Temperament & Compatibility
Common Synodontis (False Upside Down Catfish) Varieties
Each variety inherits the species defaults above. Only differences are highlighted.
Adult (Standard)
Fully grown adult form. Requires a large tank with plenty of hiding spaces like driftwood caves. Must not be kept with bite-sized nano fish.
Same care requirements as the base species
Also known as: Adult Synodontis, Full Grown
Juvenile (Grow-out)
Often sold very small (around 5cm) and mistakenly assumed to stay small. Juveniles may exhibit more upside-down swimming behavior than adults. Will grow rapidly and soon require an upgrade to a large setup.
Differs in 4 traits from base species
Also known as: Baby, Juvenile
Common Synodontis (False Upside Down Catfish) Care Guide Summary
The Common Synodontis (False Upside Down Catfish), scientifically known as Synodontis nigrita, belongs to the Catfish family group. Adults reach a maximum size of approximately 22 cm and have a fusiform body shape with a moderate growth rate. Classified as mostly peaceful, this species primarily occupies the bottom zone of the aquarium and produces a high level of biological waste.
To thrive, the Common Synodontis (False Upside Down Catfish) requires a freshwater only aquarium with a minimum volume of 200 litres and a tank length of at least 100 cm. Water temperature should be maintained between 22°C and 28°C, with a pH range of 6.5–8 and a general hardness of 5–20 dGH. A moderate water flow is preferred.
Due to its specialist needs, the Common Synodontis (False Upside Down Catfish) is best suited for fishkeepers who can provide a carefully planned setup. This species is available in 2 varieties: Adult (Standard) and Juvenile (Grow-out). Each may differ slightly in size, temperament, or care needs, so it is worth checking the specific requirements of the variety you plan to keep.
Common Synodontis (False Upside Down Catfish) Habitat Setup
When setting up an aquarium for the Common Synodontis (False Upside Down Catfish), a moderate water flow best suits their natural preferences. Because this species occupies the bottom zone, the aquarium layout should prioritise sufficient floor space with hiding spots among rocks, wood, or dense planting. Useful additions include a sand substrate to accommodate their sifting behaviour and driftwood, which can serve as both a hiding place and a dietary supplement.
Common Synodontis (False Upside Down Catfish) Compatibility Notes
Classified as mostly peaceful, the Common Synodontis (False Upside Down Catfish) is adaptable and can be kept singly or in a small group, offering flexibility when planning a community tank. When choosing tankmates, any fish small enough to fit in its mouth will likely be eaten, territorial behaviour may cause issues if hiding spots or floor space are limited, and boisterous or fast-moving tankmates may cause this species undue stress. Selecting tankmates that favour different water layers from the bottom zone can help reduce competition and territorial overlap.
Common Synodontis (False Upside Down Catfish) Recommended Tank Sizes
Standard aquarium sizes that meet the minimum volume and length requirements for Common Synodontis (False Upside Down Catfish).
55 Gallon Standard
60 Gallon Breeder
75 Gallon Standard
90 Gallon Standard
125 Gallon Standard
150 Gallon High
Common Synodontis (False Upside Down Catfish) Feeding & Diet Considerations
The Common Synodontis (False Upside Down Catfish) is a predatory species that will readily consume small fish, so nano or bite-sized tankmates should be avoided and is primarily active at dusk and dawn, so offering food shortly after lights-off ensures it receives adequate nutrition.
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Frequently Asked Questions About Common Synodontis (False Upside Down Catfish)
How big does Common Synodontis (False Upside Down Catfish) get?
Common Synodontis (False Upside Down Catfish) (Synodontis nigrita) typically reaches a maximum adult size of approximately 22 cm. They have a fusiform body shape and a moderate growth rate.
What tank size does Common Synodontis (False Upside Down Catfish) need?
A minimum aquarium volume of 200 litres and a tank length of at least 100 cm are recommended for Common Synodontis (False Upside Down Catfish). This ensures enough swimming space and helps maintain stable water conditions.
What water parameters does Common Synodontis (False Upside Down Catfish) need?
Common Synodontis (False Upside Down Catfish) thrives in freshwater only conditions with a temperature range of 22–28°C, a pH between 6.5 and 8, and a general hardness of 5–20 dGH. A moderate water flow is preferred.
Is Common Synodontis (False Upside Down Catfish) peaceful or aggressive?
Common Synodontis (False Upside Down Catfish) is classified as mostly peaceful with an aggression score of 4 out of 10. They are generally well-suited to peaceful community tanks.
Can Common Synodontis (False Upside Down Catfish) live alone?
Yes, Common Synodontis (False Upside Down Catfish) can be kept singly or in a group. They are flexible and adapt well to both setups.
Does Common Synodontis (False Upside Down Catfish) have any special tank requirements?
Yes. Common Synodontis (False Upside Down Catfish) benefits from sand (sifters) and driftwood (digestion/hiding) in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.
Top Tank Mates for Common Synodontis (False Upside Down Catfish)
These fish are strong compatibility matches for Common Synodontis (False Upside Down Catfish) based on water preferences, temperament, adult size, and tank behavior.
False Glass Catfish
Kryptopterus macrocephalus
Ideal Tank MatesBetta Imbellis
Betta imbellis
Ideal Tank MatesBanded Gourami
Trichogaster fasciata
Ideal Tank MatesCupid Cichlid
Biotodoma cupido
Ideal Tank MatesBumblebee Catfish (South American)
Microglanis iheringi
Ideal Tank MatesAngelicus Pleco L073
Hypancistrus sp. L073
Ideal Tank MatesPlants That Suit Common Synodontis (False Upside Down Catfish)
These plants pair well with Common Synodontis (False Upside Down Catfish) based on shared water preferences, layout fit, and how likely they are to hold up in the same aquarium.
African Onion Plant
Crinum calamistratum
Afzel's Anubias
Anubias afzelii
Amazon Sword
Echinodorus amazonicus
Anacharis
Egeria densa
Anubias Barteri
Anubias barteri
Ashy Pipewort
Eriocaulon cinereum
Fish Similar to Common Synodontis (False Upside Down Catfish)
Domino Synodontis
Synodontis notatus
A large, unusually active and diurnal upside-down catfish from the Congo Basin. They are characterized by a grey-brown body with one or more prominent dark spots. While peaceful with robust community fish, they are highly territorial toward other Synodontis species and will opportunistically eat small fish. They are more active in the mid-water column than most of their relatives.
Asian Upside Down Catfish
Mystus leucophasis
A fascinating but highly aggressive bagrid catfish from Myanmar that spends almost its entire life swimming inverted. Unlike the peaceful African Synodontis upside-down catfish, the Asian variety grows large, is fiercely territorial, and will predate on smaller tank mates. They require ample driftwood or caves to rest underneath during the day.
Iridescent Shark
Pangasianodon hypophthalmus
The Iridescent Shark is not a true shark, but a highly active, schooling catfish native to Southeast Asia. While frequently sold as tiny juveniles, they are notorious 'tank busters' that grow to massive sizes. They are extremely skittish and easily spooked, often injuring themselves by crashing into aquarium glass. They are best suited for heated indoor ponds or massive custom aquariums.
False Glass Catfish
Kryptopterus macrocephalus
A fascinating, semi-transparent schooling catfish from Southeast Asia. Unlike the more common Ghost Catfish, this species has distinct stripes or mottling along its body. They are incredibly peaceful but timid, requiring heavily planted blackwater setups with dim lighting and a large shoal to feel secure.
Chao Phraya Giant Catfish (Paroon Shark)
Pangasius sanitwongsei
An apex predator native to the Mekong and Chao Phraya basins. This true 'monster fish' is completely unsuitable for home aquariums. They grow to massive proportions, are highly active, and easily startled—often severely injuring themselves by crashing into tank walls. They possess a massive appetite and are highly piscivorous, consuming any tank mate that fits in their mouth.
False Siamese Algae Eater (Stonelapping Minnow)
Garra cambodgiensis
A cyprinid native to fast-flowing streams in Southeast Asia. It is notoriously sold misidentified as the true Siamese Algae Eater (Crossocheilus oblongus). Unlike the true SAE, its black lateral stripe stops at the base of the tail fin rather than extending through it, and it features a yellowish stripe above the black line. It is an excellent biofilm grazer but does not eat Black Beard Algae as effectively. They require highly oxygenated water and become very territorial with conspecifics as they age.