Pygmy Corydoras
The Tiny Bottom-Dwelling Charmer
Pygmy Corydoras are adorable miniature catfish that bring personality and cleaning ability to nano aquariums. Unlike their larger Corydoras cousins, these tiny fish are mid-water swimmers that create charming schooling displays throughout the aquarium.
Why Pygmy Corydoras Are Nano Tank Must-Haves
Perfectly Tiny
At just one inch, they are perfect for nano aquariums as small as 10 gallons.
Adorable Schools
Keep in groups of 8+ for endearing social behavior and schooling displays.
Unique Behavior
Unlike larger Cories, they actively swim in the mid-water column creating dynamic movement.
Peaceful Nature
Extremely gentle fish compatible with virtually any peaceful nano community.
Pros
- Perfect for nano aquariums as small as 10 gallons
- Adorable social behavior in groups
- Unique mid-water swimming unlike other catfish
- Extremely peaceful with all tankmates
- Help keep substrate clean
Cons
- Very small and can be difficult to observe
- Must be kept in larger groups of 8 or more
- Sensitive to poor water quality
- Can be outcompeted for food by faster fish
- Relatively short lifespan of 3-4 years
Care Requirements
What you need to know to keep your Pygmy Corydoras healthy and happy
Exercise
0 minutes daily
Provide at least a 10-gallon tank with fine sand substrate, gentle filtration, and plenty of plants and hiding spots.
Grooming
Weekly water changes of 20%
Maintain temperature at 72-79F with pH 6.0-7.2. Soft to moderately hard water preferred. Gentle filtration to avoid strong currents.
Nutrition
Feed sinking micro pellets, crushed flakes, and baby brine shrimp. Ensure food reaches them before faster tankmates consume it all.
Training Timeline
Group Introduction
Add in groups of at least 8-10. Provide fine sand substrate to protect their delicate barbels.
Social Behavior
Watch for engaging schooling behavior as they explore together in the water column.
Community Integration
Integrate with other peaceful nano species. Monitor to ensure they access food adequately.
Established School
Settled groups display charming social behaviors including resting together on leaves and swimming in synchronized groups.
Health Information
Common health concerns and prevention tips for Pygmy Corydoras
Common Health Issues
- Barbel erosion from rough substrate
- Stress from small group sizes
- Sensitivity to ammonia and nitrite
- Internal parasites from live food
Prevention Tips
- Use only fine sand substrate never gravel
- Keep in groups of 8 or more
- Maintain excellent water quality
- Quarantine live food before feeding
- Avoid strong water currents
Ready for Pygmy Corydoras?
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Learn More About Pygmy Cories