Corydoras pygmaeus
The pygmy cory is one of the smallest Corydoras, from the upper Amazon. Unlike many corys it often schools in mid-water as well as foraging along the bottom—behaviour that shows best in large groups (eight or more). Smooth sand protects barbels; avoid rough gravel. Peaceful and suited to planted nano and community tanks with small, non-aggressive tankmates. Egg scatterers that deposit adhesive eggs on glass, leaves, or decor; no parental care.
Micro sinking pellets or crushed flake; frozen cyclops or baby brine shrimp; food must reach the bottom and suit tiny mouths.
Frequency: 1–2× daily
Feed after lights-on; shy individuals may miss out in competitive tanks—target feed if needed.
Native Region: Brazil, Peru (upper Amazon tributaries)
Shallow streams and margins with sand, leaves, and vegetation.
Fine sand, gentle flow, plants, and open water column for mid-water schooling; avoid large fish that outcompete for food.
Activity Level: Moderate
Schooling Size: 8+ recommended
Shoals tightly when secure; mid-water “hovering” is normal; keep only with peaceful species.
Difficulty: Moderate
Type: Egg scatterer
Sexual Dimorphism: Females slightly broader when viewed from above; males often slimmer.
Classic T-mating; eggs on glass and plants; remove adults or provide dense moss for fry; cool water change sometimes triggers spawning.
Substrate: Sand
Plant Safe: Yes
Driftwood and leaves; low light can increase confidence.
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