Compatibility Overview
Pea Puffer and Pygmy Corydoras can potentially coexist, but the combination requires careful attention. Some combination of water parameter differences, size mismatch, or temperament issues make this pair challenging. A larger tank (minimum 29 gallons), dense planting, and close monitoring are essential.
| Factor | Pea Puffer | Pygmy Corydoras | Verdict |
|---|---|---|---|
| Temperature | 74–82°F | 72–79°F | ✅ 74–79°F |
| pH Range | 7.0–8.0 | 6.0–7.5 | ⚠️ 7.0–7.5 (narrow) |
| Temperament | semi | peaceful | ⚠️ Monitor |
| Adult Size | 1 in | 1 in | ✅ Similar |
| Min. Group | 1+ | 6+ | See below |
| Min. Tank Size | 29 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
Species Profiles
Pea Puffer — Carinotetraodon travancoricus
World's smallest pufferfish — intensely territorial and nippy despite tiny size. Will attack fins and eat shrimp and snails.
Pygmy Corydoras — Corydoras pygmaeus
Tiny armoured catfish that school in open water as well as on the substrate. Peaceful with all non-aggressive species.
Frequently Asked Questions
Can Pea Puffer live with Pygmy Corydoras?
With significant caution and a larger tank. Pea Puffer and Pygmy Corydoras can potentially coexist, but the combination requires careful attention. Some combination of water parameter differences, size mismatch, or temperament issues make this pair challenging. A larger tank (minimum 29 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Pea Puffer and Pygmy Corydoras together?
A minimum of 29 gallons is recommended for keeping Pea Puffer and Pygmy Corydoras together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Pea Puffer and Pygmy Corydoras?
74–79°F
Is a Pea Puffer aggressive toward a Pygmy Corydoras?
Pea Puffer is semi and Pygmy Corydoras is peaceful. Narrow temperature overlap (74–79°F) — keeping the tank at exactly 75–78°F is needed for both species.