Can Firemouth Cichlid live with Panda Corydoras?
High risk due to water mismatch, aggression, or predation.
Why Firemouth Cichlid and Panda Corydoras Don't Make an Easy Pair
The size gap is 4.0" — Firemouth Cichlid (6.0") and Panda Corydoras (2.0"). A fish that fits in another fish's mouth will eventually end up there.
Firemouth Cichlid
Thorichthys meeki
| Adult Size: | 6.0" |
| Temperament: | semi-aggressive |
| Min Tank: | 30 gal |
| Temperature: | 75-86°F |
| pH Range: | 6.5-8.0 |
Panda Corydoras
Corydoras panda
| Adult Size: | 2.0" |
| Temperament: | peaceful |
| Min Tank: | 15 gal |
| Temperature: | 68-77°F |
| pH Range: | 6.0-7.5 |
Water Parameter Overlap
| Parameter | Firemouth Cichlid | Panda Corydoras | Overlap |
|---|---|---|---|
| Temperature | 75-86°F | 68-77°F | 2°F ✓ |
| pH | 6.5-8.0 | 6.0-7.5 | 1.0 ✓ |
Compatibility Breakdown
Temperament Match: semi-aggressive + peaceful. Semi-aggressive → watch territory and feeding.
⚠️ Size Predation Risk: Firemouth Cichlid (6.0") vs Panda Corydoras (2.0"). A 4.0" gap — the larger fish will view the smaller fish as food.
Score: 30.0/100 (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 Firemouth Cichlid — 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:
Floating pellet for medium cichlids
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.
Tools & Resources
Accuracy note: This tool uses expert rules + FishBase.org data. Individual fish behavior varies — a semi-aggressive individual Firemouth Cichlid 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.