Can Corydoras Catfish live with Kuhli Loach?
These two species are usually compatible in community tanks.
Why Corydoras Catfish and Kuhli Loach Work
These two species overlap in both temperature (75–78°F overlap) and pH (6.0-7.0 overlap range). Their temperature tolerances are close enough, and neither fish pushes the pH so far outside the other's comfort zone that it creates chronic stress. The temperament match (peaceful + peaceful) is low-conflict. In a 20+ gallon tank with adequate hiding spots, these two can coexist with minimal problems.
Corydoras Catfish
Corydoras aeneus
| Adult Size: | 2.8" |
| Temperament: | peaceful |
| Min Tank: | 20 gal |
| Temperature: | 72-78°F |
| pH Range: | 6.0-7.5 |
Kuhli Loach
Pangio kuhlii
| Adult Size: | 4.0" |
| Temperament: | peaceful |
| Min Tank: | 20 gal |
| Temperature: | 75-86°F |
| pH Range: | 5.5-7.0 |
Water Parameter Overlap
| Parameter | Corydoras Catfish | Kuhli Loach | Overlap |
|---|---|---|---|
| Temperature | 72-78°F | 75-86°F | 3°F ✓ |
| pH | 6.0-7.5 | 5.5-7.0 | 1.0 ✓ |
Compatibility Breakdown
Temperament Match: peaceful + peaceful. Both peaceful → minimal conflict.
Score: 80.0/100 (GOOD ≥80, CAUTION ≥50, RISKY <50).
🔧 Tank Setup Requirements (for Both)
- Minimum tank: 20 gallons — sized for the larger fish in the pair.
- Temperature: keep it between 75°F and 78°F.
- pH: maintain 6.0 – 7.0.
- Hiding spots: essential for Corydoras Catfish — caves, plants, or driftwood to retreat when feeling stressed.
- Water changes: 25% weekly minimum. Two species mean double the bioload.
🔧 Tank Stocking Calculator
Enter tank size to calculate safe stocking levels:
Recommended Equipment
Based on tank size 20+ gallons:
Sinking pellets for corydoras
Explore Related Checks
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Accuracy note: This tool uses expert rules + FishBase.org data. Individual fish behavior varies — a peaceful individual Corydoras Catfish may act differently from its species average. Always observe, quarantine new arrivals for 2-4 weeks, and avoid overcrowding. If a pairing says CAUTION, start with a smaller group and a lid.