Corydoras pygmaeus, commonly known as the Pygmy Corydoras, is a small and peaceful freshwater fish that adds charm and activity to the aquarium.
Overview
Corydoras pygmaeus, commonly referred to as the Pygmy Corydoras, is a small freshwater catfish native to the Amazon Basin in South America. This species typically grows to a size of 3-4 cm and has a lifespan of 3 to 5 years.
These tiny catfish are known for their friendly and social nature, often found swimming in small groups. Their playful behavior and unique appearance make them popular choices among aquarists.
Tank Requirements
Corydoras pygmaeus thrive in slightly acidic to neutral water with a pH range of 6.0 to 7.5 and a general hardness (GH) between 2-12 dGH. The ideal temperature for their habitat is between 22-26°C, and they should be housed in a tank with a minimum volume of 60 liters.
A well-planted aquarium with sandy substrate is ideal for these fish, as they love to forage for food among the substrate. Providing plenty of hiding spots and open swimming space will keep them happy and healthy.
Feeding and Diet
In the wild, Corydoras pygmaeus are omnivorous and primarily feed on small invertebrates, detritus, and plant matter. In captivity, they readily accept high-quality sinking pellets, flakes, and frozen or live foods such as brine shrimp and bloodworms.
To ensure their health and well-being, it is essential to provide a varied diet that includes both protein-rich and vegetable-based foods. Feeding should occur once or twice daily, with portions they can consume within a few minutes.
Care and Maintenance
Maintaining optimal water conditions is crucial for Corydoras pygmaeus. Regular water changes of 20-30% per week are recommended to keep the water clean and stable. A reliable filtration system is essential for maintaining good water quality.
These fish prefer a well-oxygenated environment, so providing adequate aeration through a sponge filter or air stones can be beneficial. Monitoring water parameters closely will help prevent stress and disease.
Compatibility
Corydoras pygmaeus are peaceful fish that can be kept with various community tankmates. Suitable companions include small tetras, rasboras, and other peaceful species that share similar water requirements.
Avoid keeping them with aggressive or large fish, as they may be bullied or outcompeted for food. Ensuring a spacious environment with plenty of hiding spots will help reduce stress and aggression.
Breeding
Breeding Corydoras pygmaeus in captivity can be rewarding but requires some preparation. They are egg layers and typically spawn on flat surfaces in the aquarium.
Setting up a breeding tank with gentle filtration and plenty of hiding places will encourage spawning behavior. Once the eggs are laid, they should be removed to prevent them from being eaten by the parents. Fry can be fed infusoria or finely crushed flakes once they are free-swimming.