Pygmy Corydoras

The smallest corydoras — barely an inch — famous for hovering in midwater shoals like tiny rainbows before darting down to feed. Ideal for nano tanks, always in a large group.

• Minimum footprint: 10 gallons; a 15+ gallon tank gives real swimming room.
• Preferred swimming zone: bottom of the water column.
• Social — keep a group of at least 8.
• Care level: easy.

• Temperature: 72–79°F
• pH: 6–7.5
• Hardness: 2–12 dGH (Moderate)

Stable parameters matter more than perfect ones — aim for consistency before chasing an exact number.

peaceful

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An omnivore — offer a staple flake or pellet plus regular frozen or live foods (daphnia, bloodworm, brine shrimp) and some vegetable matter for balance.

• Neon Tetra
• Guppy
• Bronze Corydoras
• Harlequin Rasbora
• Zebra Danio
• Platy

• Angelfish — Occasional chasing or fin nipping is possible.
• Bolivian Ram — Occasional chasing or fin nipping is possible.
• Dwarf Gourami — Occasional chasing or fin nipping is possible.
• Tiger Barb — Occasional chasing or fin nipping is possible.
• Yoyo Loach — Occasional chasing or fin nipping is possible.
• Kribensis — Occasional chasing or fin nipping is possible.

Standard tanks at or above the recommended 15 gallons:

• 15 gallon 24 × 12 × 12″
• 20 gallon High 24 × 12 × 16″
• 20 gallon Long 30 × 12 × 12″
• All tank sizes

• Start from a 10 gallon minimum and plan the full group size (8+) before you buy.
• Activity level is moderate, which affects how much of the tank it uses and how much it adds to the bioload.
• Zoning matters: this species lives mostly in the bottom zone, so choose tank mates that occupy other levels.

Compatibility depends on tank size, water chemistry, temperament, and adult size. Run a full check against any species in our database.

• FishBase(Scientific Database, accessed 2026-09-20)
• SeriouslyFish(Specialist Publication, accessed 2026-09-20)
• Aquarium Forge editorial guidelines(Editorial Interpretation, accessed 2026-09-22)

Data reviewed: September 2026 · Data version: 2026.11
Editorial note: Minimum tank recommendations may vary by source and husbandry approach. Our figures synthesise the sources above for planning purposes.