Negro Corydoras

Geographical Origin and Habitat: Native to South America, specifically the Rio Negro basin in Brazil. It inhabits quiet river banks, shallow pools, and forest streams with soft substrates covered in organic debris.

Taxonomy and Morphology: Belonging to the family Callichthyidae and genus Corydoras. Characterized by double rows of bony plates (scutes) instead of scales and sensory barbels. Grows to 5.0 cm.

Social Behavior: Peaceful, active, and highly social. It is a strict bottom dweller. Must be kept in a group of at least 6 individuals to prevent stress and encourage natural foraging.

Coloration and Sexual Dimorphism: Displays a dark grayish-brown body with subtle metallic reflections. Adult females are significantly broader and rounder than males when viewed from above.

Aquarium Setup: A tank of 70 liters minimum with a fine sand substrate is critical to protect their delicate barbels. Provide cover using driftwood, smooth rocks, and robust live plants.

Diet and Feeding: Bottom-dwelling omnivore. Sifts sand for food. Feed high-quality sinking pellets, wafers, and frozen foods like bloodworms and tubifex. They do not clean waste.

Water Quality: Prefers cool, clean water. Keep temperature at 20-25°C, pH 6.0-7.5, and GH 2-15 dGH. Maintain a strict sand-cleaning schedule.

Compatibility and Cohabitation: Perfect for peaceful community setups. Compatible with small tetras, rasboras, and dwarf cichlids. Avoid housing with aggressive bottom dwellers.

Aquarium Breeding: Spawning is triggered by large cool water changes. Eggs are deposited in a T-position and glued to glass or leaves. Remove parents to protect the eggs.

Risks and Diseases: Barbels can erode due to sharp gravel or high bacterial counts in the substrate. Regular maintenance of the sand bed is crucial.