Can Emperor Tetra live with Tiger Barb?
These two species are usually compatible in community tanks.
Why Emperor Tetra and Tiger Barb Work
These two species overlap in both temperature (74–79°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 + semi-aggressive) is low-conflict. In a 20+ gallon tank with adequate hiding spots, these two can coexist with minimal problems.
Emperor Tetra
Nematobrycon palmeri
| Adult Size: | 2.0" |
| Temperament: | peaceful |
| Min Tank: | 20 gal |
| Temperature: | 73-82°F |
| pH Range: | 5.5-7.0 |
Tiger Barb
Puntigrus tetrazona
| Adult Size: | 3.0" |
| Temperament: | semi-aggressive |
| Min Tank: | 20 gal |
| Temperature: | 74-79°F |
| pH Range: | 6.0-7.0 |
Water Parameter Overlap
| Parameter | Emperor Tetra | Tiger Barb | Overlap |
|---|---|---|---|
| Temperature | 73-82°F | 74-79°F | 5°F ✓ |
| pH | 5.5-7.0 | 6.0-7.0 | 1.0 ✓ |
Compatibility Breakdown
Temperament Match: peaceful + semi-aggressive. Semi-aggressive → watch territory and feeding.
Score: 90.0/100 (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 74°F and 79°F.
- pH: maintain 6.0 – 7.0.
- Hiding spots: essential for Emperor Tetra — 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:
Micro pellet food for small tetras
Explore Related Checks
See what else works with these fish:
⚠️ Common Reasons This Pairing Fails in Practice
- 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 peaceful individual Emperor Tetra 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.