FishChecker

The Pygmy Cory (Corydoras pygmaeus) is an absolutely charming and highly sought-after species for nano aquariums and peaceful community tanks. Reaching an adult size of only about one inch (2.5 cm), these miniature catfishes are among the smallest of the Corydoras species. They exhibit a delicate, silvery-grey body often marked with a distinct horizontal dark stripe running from their snout to the tail, sometimes complemented by a faint line above it. Unlike their larger Corydoras cousins, Pygmy Cories frequently swim and hover in the mid-water column, adding a dynamic presence to all levels of the aquarium, not just the substrate.They are incredibly peaceful and social, absolutely thriving in groups of at least six, but preferably ten or more, where their schooling behavior truly shines. A well-maintained tank of 5-10 gallons is suitable for a small group, but larger tanks allow for bigger schools and more stable parameters. Provide a soft, sandy substrate which they love to sift through with their sensitive barbels in search of food. Plenty of dense planting, driftwood, and small caves will offer security and enrichment. Water parameters should be stable, soft to medium hard, and slightly acidic to neutral (pH 6.0-7.5), with temperatures between 72-78°F (22-26°C). Due to their small size, they are sensitive to fluctuating water conditions and require excellent water quality with gentle filtration.Diet-wise, Pygmy Cories are omnivores and will readily accept high-quality micro pellets, crushed flakes, and especially live or frozen foods like micro worms, brine shrimp, and daphnia. Their docile nature makes them perfect tank mates for other small, peaceful species such as Endler's livebearers, celestial pearl Danios, oto catfish, and dwarf shrimp. A school of Pygmy Cories is not only delightful to observe but also acts as an efficient clean-up crew for uneaten food, making them an invaluable addition to any well-planned nano or small community aquarium.