Aquariumpro
🔍
← Back to species
FishFreshwaterIntermediatePeaceful

Upsidedown Catfish

Synodontis batensoda

Also known as: Squeaker

A large African catfish that genuinely swims upside down as its default mode.

Upsidedown Catfish
AI-generated illustration
1 / 3
© Google Gemini 2.5 Flash Image · AI-generated

About

The upsidedown catfish (Synodontis batensoda) is one of those fish that makes visitors do a double-take, because swimming belly-up is not a sign of distress here. It's simply how this species gets around. That inverted posture is thought to be an adaptation for feeding at the water's surface, where it can pick off insects and other morsels with ease. In the wild, it ranges widely across West and Central Africa, turning up in major river systems including the Nile, Niger, Senegal, Gambia, and Chad basins, so it's a species accustomed to a broad range of conditions across a large geographic footprint. Beyond the novelty of its swimming style, this is a genuinely capable omnivore that will work through algae, detritus, planktonic material, and meaty foods like crustaceans and small invertebrates. It's a solidly built catfish that can reach a respectable size, so tankmates should be chosen with that in mind. Smaller fish may eventually become a meal. Synodontis in general are known for producing audible squeaking sounds when handled, and batensoda is no exception. Intermediate-level experience is a reasonable baseline, mostly because of its size requirements and the need to think carefully about compatible tankmates.

Frequently asked questions

How big does the Upsidedown Catfish get?
The Upsidedown Catfish reaches about 6–7" as an adult.
What size tank does the Upsidedown Catfish need?
A minimum of 55 gallons is recommended for the Upsidedown Catfish, with more room needed for a proper group.
What water parameters does the Upsidedown Catfish need?
The Upsidedown Catfish does best with a temperature of 72–82°F, a pH of 6–8, hardness around 4–25 dGH.
Is the Upsidedown Catfish aggressive?
The Upsidedown Catfish is generally peaceful and suits a community tank with similarly calm tankmates.
What does the Upsidedown Catfish eat?
The Upsidedown Catfish is an omnivore. It does well on a varied diet of quality flake or pellet plus occasional frozen or live foods.
How long does the Upsidedown Catfish live?
With good care, the Upsidedown Catfish typically lives 5-10 years.