The Pygmy Corydoras, scientifically known as Corydoras pygmaeus, is a small, peaceful freshwater fish belonging to the family Callichthyidae. Native to slow-moving rivers and streams in the Amazon Basin, particularly in Brazil, these tiny catfish are highly popular among aquarists due to their small size, gentle nature, and active schooling behavior. Unlike other Corydoras species, Pygmy Corydoras often swim mid-water, making them unique in behavior. These fish typically grow to about 1 inch (2.5 cm) in length and can live up to 3-5 years in captivity with proper care.
Habitat and Tank Requirements:
In their natural habitat, Pygmy Corydoras are found in slow-moving, shallow waters with sandy or muddy substrates and dense vegetation. To replicate these conditions in a home aquarium, it’s important to provide soft, slightly acidic to neutral water with plenty of plants and hiding spots.
Tank Size and Water Parameters:
| PARAMETER | RECOMMENDED |
|---|---|
| Tank Size | Minimum 40 litres |
| Temperature | 72-79°F (22-26°C) |
| pH | 6.0-7.5 |
| Hardness | Soft to moderately hard water, 2-12 dGH |
This table provides the recommended water conditions for keeping Pygmy Corydoras healthy and active. These small fish thrive in stable water conditions with soft substrates, such as sand, which is gentle on their barbels while they forage for food.
Pygmy Corydoras are well-suited for heavily planted tanks, as they appreciate hiding spots and low light areas. Smooth rocks, driftwood, and plenty of live plants such as Java moss, Anubias, and Vallisneria will create a natural environment for them to explore. A gentle filtration system is recommended, as they prefer calm waters with minimal water flow. Regular water changes are essential to maintain their health.

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