Upside-down Catfish
Synodontis nigriventris
Upside-down Catfish (Synodontis nigriventris) — Easy care, Peaceful, under Catfish & Cory. Minimum tank in the app: 30 US gal min; aim for 75–82°F and pH 6–7.8. The Upside-down Catfish is ideal for aquarists seeking a low-maintenance bottom dweller that adds a unique swimming style to the tank.

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.
Natural distribution
Mostly South America / Africa
- South America
- Africa
Regional colours match the stocking calculator’s origin map.
Upside-down Catfish Tank Setup
Aim for a tank that balances open swimming space with plenty of hiding spots using driftwood and plants. A soft substrate is preferable to avoid injury during bottom feeding, and moderate lighting helps reduce stress. Ensure adequate flow to mimic their natural habitat but avoid strong currents that may disrupt their comfort.
What Do Upside-down Catfishs Eat?
As omnivores and bottom feeders, they can be somewhat slow to feed, making them vulnerable in competitive feeding situations. Offering a varied diet that sinks quickly will ensure they receive adequate nutrition without undue stress.
Upside-down Catfish Tank Mates
Ideal companions include similarly sized, non-aggressive fish that occupy different water levels, like tetras or rasboras. Large, boisterous species may intimidate them, while fin-nippers should be avoided altogether. When housed with other Upside-down Catfish, they typically coexist peacefully, but overcrowding may lead to stress if space isn't sufficient.
Are Upside-down Catfishs Good for Beginners?
In App-aquatic we file this under easy care. That still means a cycled tank, realistic stocking, and parameters that do not swing every weekend. Aquarists often underestimate the importance of tank structure, leading to shy behaviour or stress when the fish can't find shelter. overstocking or pairing them with overly aggressive species can disrupt their calm nature.
Building a community? Run the full list through the stocking calculator before you add anything else.
Log tests and reminders in App-aquatic—free, same data you see here.




