Synodontis nigriventris
The upside-down catfish is a small Synodontis from Congo basin waters, famous for feeding and resting inverted under floating wood and plant leaves. Keep in groups of at least four for confidence and natural behaviour. Peaceful but may nip very long fins if underfed or crowded. Provide surface cover, clean water, and varied sinking foods.
Sinking granules; frozen or live small foods; surface foods taken upside-down under cover.
Frequency: 1–2× daily
Offer both bottom and surface-oriented feeds; floating plants help natural feeding posture.
Native Region: Central Africa (Congo River basin)
Slow streams and pools with overhanging vegetation and submerged wood.
Floating plants, driftwood undersides, gentle flow; avoid sharp decor.
Activity Level: Moderate
Schooling Size: 4+ recommended
Shoals loosely; darts to cover when startled. Most active at dawn and dusk.
Difficulty: Difficult
Type: Egg scatterer
Sexual Dimorphism: Females rounder when gravid; subtle differences.
Spawning rarely reported in community aquaria; soft acidic water sometimes used.
Substrate: Sand
Plant Safe: Yes
Driftwood spanning upper water column encourages upside-down browsing.
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