Cordoras – Pygmy Cory Catfish – 1cm

Pygmy Cory: A Tiny and Peaceful Bottom-Dweller for Nano Aquariums

Pygmy Cory (Corydoras pygmaeus) is a delightful miniature catfish known for its small size and social nature. These active and peaceful fish are perfect for nano and community tanks, where they add charm with their constant activity and schooling behaviour. Ideal for aquarists of all levels, Pygmy Corys are hardy and easy to care for when kept in the right environment.

Caring for Pygmy Corys

Pygmy Corys thrive in tanks as small as 20 liters, making them perfect for nano setups. They prefer soft, sandy substrates to protect their delicate barbels and enjoy tanks with plenty of live plants, driftwood, and open swimming space. Maintain water temperatures between 22°C and 26°C, with a pH range of 6.5–7.5. Regular water changes and gentle filtration help keep their environment clean and stress-free.

Ideal Tank Mates for a Pygmy Cory

These peaceful fish are highly social and should be kept in groups of at least six to encourage natural schooling behaviours. They coexist well with other small, non-aggressive species such as Ember Tetras, Chili Rasboras, and shrimp. Avoid housing them with larger or aggressive tank mates, as their small size makes them vulnerable.

Feeding Pygmy Corys

Pygmy Corys are omnivorous and require a varied diet for optimal health. Offer high-quality sinking pellets or micro-pellets as their staple food, supplemented with live or frozen options such as daphnia, baby brine shrimp, or bloodworms. Occasionally include blanched vegetables like zucchini or cucumber to ensure a balanced diet. Proper nutrition enhances their activity levels and overall vitality.

Breeding The Pygmy Cory

Breeding Pygmy Corys is achievable in a well-maintained environment. Use a breeding tank with soft, slightly acidic water and provide plenty of fine-leaved plants for egg-laying. Females deposit eggs on surfaces such as glass, plants, or decorations. Remove adults after spawning to protect the eggs. The fry hatch in 3–5 days and should be fed infusoria or finely crushed fry food until they grow larger.

FAQs

What tank size is ideal for Pygmy Corys?
A minimum of 20 liters is suitable, though larger tanks provide more stability and space.

Are they good for community tanks?
Yes, they pair well with small, peaceful species like Ember Tetras and shrimp.

What do they eat?
They thrive on sinking pellets, live or frozen foods, and occasional blanched vegetables.

Do they need to be in groups?
Yes, they are social fish and should be kept in groups of at least six.

What water conditions do they need?
They prefer soft, clean water with temperatures between 22°C and 26°C and a pH range of 6.5–7.5.

Species Overview

• Species: Corydoras pygmaeus
• Common Name: Pygmy Cory
• Origin: South America (Amazon Basin)
• Diet: Omnivore
• PH Range: 6.5–7.5
• Temperature: 22°C–26°C
• Max Size: Up to 3 cm
• Tank Size: Minimum 20 liters