Pygmy Corydoras and Silver Dollar Compatibility Overview
Pygmy Corydoras and Silver Dollar can potentially coexist, but the combination requires careful attention. Both species are peaceful, and neither poses a major aggression risk to the other. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
| Factor | Pygmy Corydoras | Silver Dollar | Verdict |
|---|---|---|---|
| Temperature | 72โ79ยฐF | 75โ82ยฐF | โ 75โ79ยฐF |
| pH Range | 6.0โ7.5 | 6.0โ7.0 | โ 6.0โ7.0 |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 1 in | 5.9 in | โ 6ร difference |
| Min. Group | 6+ | 5+ | See below |
| Min. Tank Size | 75 gallons (for both species) | โ | |
Compatibility Positives
Caution Points
Species Profiles
Pygmy Corydoras โ Corydoras pygmaeus
Tiny armoured catfish that school in open water as well as on the substrate. Peaceful with all non-aggressive species.
โ Full Pygmy Corydoras care guide
Silver Dollar โ Metynnis argenteus
The Metynnis argenteus, known as the Silver Dollar fish, is a popular freshwater species with a distinctive silver color and disc-shaped body. They require a spacious tank and are best kept in groups to prevent bullying. Their peaceful nature makes them suitable for community tanks, but they are not known to school.
Frequently Asked Questions
Can Pygmy Corydoras live with Silver Dollar?
With significant caution and a larger tank. Pygmy Corydoras and Silver Dollar can potentially coexist, but the combination requires careful attention. Both species are peaceful, and neither poses a major aggression risk to the other. A larger tank (minimum 75 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Pygmy Corydoras and Silver Dollar together?
A minimum of 75 gallons is recommended for keeping Pygmy Corydoras and Silver Dollar together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Pygmy Corydoras and Silver Dollar?
75โ79ยฐF โ inside Pygmy Corydoras's 72โ79ยฐF and Silver Dollar's 75โ82ยฐF.
Is a Pygmy Corydoras aggressive toward a Silver Dollar?
Pygmy Corydoras is peaceful and Silver Dollar is peaceful. No major aggression issues are expected between these species.
Related Compatibility Guides
Tank Size for Pygmy Corydoras and Silver Dollar
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 75 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 125 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 150 gal | Best when keeping larger schools or reducing territorial pressure. |