Overview
The Synodontis Catfish (Upside-Down) (Synodontis nigriventris) is a beginner freshwater species known for its brown, dark mottled coloration. Swims upside down. Underside of surfaces.
Origin & Appearance
Origin: Congo.
Colors: Brown, Dark mottled.
Body Shape: Fusiform (torpedo/streamlined). Typical adult dimensions: 10.0 x 1.8 x 3.0.
Sexual Dimorphism: Subtle; females plumper.
Tank & Water Requirements
| Min Tank Size | 20 gallons |
| Temperature | 72–79°F |
| pH Range | 6–7.5 |
| Water Hardness (GH) | 5-15 |
| Bioload | medium |
| Oxygen Demand | low |
| Plant Safe | yes |
| Aquarium Position | Underside of surfaces |
Behavior & Activity
Swims belly-up along surfaces and under objects; unique inverted cruising; grazes underside of driftwood and rocks
Speed: 35/100Aggression: 2/10nocturnal
Breeding
Difficult; cave spawner
Common Diseases
💊 Hardy
Expert Notes
Swims upside down