Can Panda Corydoras live with Siamese Algae Eater?
High risk due to water mismatch, aggression, or predation.
Why Panda Corydoras and Siamese Algae Eater Don't Make an Easy Pair
The size gap is 4.0" — Panda Corydoras (2.0") and Siamese Algae Eater (6.0"). A fish that fits in another fish's mouth will eventually end up there.
Panda Corydoras
Corydoras panda
| Adult Size: | 2.0" |
| Temperament: | peaceful |
| Min Tank: | 15 gal |
| Temperature: | 68-77°F |
| pH Range: | 6.0-7.5 |
Siamese Algae Eater
Crossocheilus oblongus
| Adult Size: | 6.0" |
| Temperament: | peaceful |
| Min Tank: | 30 gal |
| Temperature: | 75-82°F |
| pH Range: | 6.5-7.5 |
Water Parameter Overlap
| Parameter | Panda Corydoras | Siamese Algae Eater | Overlap |
|---|---|---|---|
| Temperature | 68-77°F | 75-82°F | 2°F ✓ |
| pH | 6.0-7.5 | 6.5-7.5 | 1.0 ✓ |
Compatibility Breakdown
Temperament Match: peaceful + peaceful. Both peaceful → minimal conflict.
⚠️ Size Predation Risk: Panda Corydoras (2.0") vs Siamese Algae Eater (6.0"). A 4.0" gap — the larger fish will view the smaller fish as food.
Score: 40.0/100 (GOOD ≥80, CAUTION ≥50, RISKY <50).
🔧 Tank Setup Requirements (for Both)
- Minimum tank: 30 gallons — sized for the larger fish in the pair.
- Temperature: keep it between 75°F and 77°F.
- pH: maintain 6.5 – 7.5.
- Hiding spots: essential for Panda Corydoras — 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 30+ gallons:
Herbivore sinking rounds for algae eaters
Explore Related Checks
See what else works with these fish:
⚠️ Common Reasons This Pairing Fails in Practice
- Narrow temperature margin: Only 2°F of overlap means a stuck heater or seasonal temperature swing can push one species out of its comfort zone.
- Size-based predation: The 4.0" size gap means the larger fish may eat the smaller one once it grows to full size. This is not fixable with more hiding spots.
- Overcrowding: Even compatible species fail in tanks that are too small. Double the species means double the bioload — 25% weekly water changes are the minimum.
- Inadequate acclimation: Adding both species on the same day without quarantine is a common mistake. Always drip-acclimate new arrivals and quarantine for 2–4 weeks.
- Mismatched feeding: Panda Corydoras is a omnivore while Siamese Algae Eater is a herbivore. Use targeted feeding zones and sinking vs. floating food to ensure both get proper nutrition.
Tools & Resources
Accuracy note: This tool uses expert rules + FishBase.org data. Individual fish behavior varies — a peaceful individual Panda Corydoras 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.