Synodontis Contractus

Synodontis contractus is a small Synodontis from the slow-flowing, planted waters of the Congo basin. Like the upside-down catfish (S. nigriventris), it moves upside down along the undersides of roots and leaves; the two species are often confused in the trade. Its most obvious difference is its large eyes. Adults reach 8–9 cm, and it is a peaceful species that suits community aquariums.

• At least 100 liters and 80 cm of length for a group of 4–6.
• Roots, broad-leaved plants and caves it can get underneath.
• 23–26°C, pH 6.0–7.5, soft to moderately hard water; dim light and floating plants.
• Clean, well-oxygenated water and a fine sand substrate.

Omnivorous. It eats small sinking tablets, granules, flakes, frozen bloodworms, brine shrimp and daphnia. Evening feeding suits this nocturnal species best.

Very peaceful; it hides during the day and becomes active at dusk. In a group it hangs together under roots. Kept alone, it becomes very shy. Its scaleless skin is sensitive to copper-based medications.

Good companions: tetras, rasboras, peaceful barbs, dwarf cichlids, corydoras, upside-down catfish.

Avoid: aggressive cichlids and large predators whose mouths it would fit into; species that need hard, alkaline water.