Compatibility Overview
Corydoras Catfish and Pea Puffer can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges, and neither poses a major aggression risk to the other. A minimum 40-gallon tank is recommended to provide adequate territory and water volume for both species.
| Factor | Corydoras Catfish | Pea Puffer | Verdict |
|---|---|---|---|
| Temperature | 70–79°F | 74–82°F | ✅ 74–79°F |
| pH Range | 6.0–8.0 | 7.0–8.0 | ✅ 7.0–8.0 |
| Temperament | peaceful | semi | ⚠️ Monitor |
| Adult Size | 2.5 in | 1 in | ⚠️ 2.5× difference |
| Min. Group | 6+ | 1+ | See below |
| Min. Tank Size | 40 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
Species Profiles
Corydoras Catfish — Corydoras spp.
Armoured bottom-dwelling catfish that are peaceful with all non-aggressive species. Need fine sand substrate to protect delicate barbels.
→ Full Corydoras Catfish care guide
Pea Puffer — Carinotetraodon travancoricus
World's smallest pufferfish — intensely territorial and nippy despite tiny size. Will attack fins and eat shrimp and snails.
Frequently Asked Questions
Can Corydoras Catfish live with Pea Puffer?
Yes, in a well-planned setup. Corydoras Catfish and Pea Puffer can generally share an aquarium with appropriate planning. Both species prefer overlapping temperature and pH ranges, and neither poses a major aggression risk to the other. A minimum 40-gallon tank is recommended to provide adequate territory and water volume for both species.
What tank size do I need for Corydoras Catfish and Pea Puffer together?
A minimum of 40 gallons is recommended for keeping Corydoras Catfish and Pea Puffer together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Corydoras Catfish and Pea Puffer?
74–79°F
Is a Corydoras Catfish aggressive toward a Pea Puffer?
Corydoras Catfish is peaceful and Pea Puffer is semi. Narrow temperature overlap (74–79°F) — keeping the tank at exactly 75–78°F is needed for both species.