Can Neon Tetra live with Pearl Gourami?
High risk due to water mismatch, aggression, or predation.
Why Neon Tetra and Pearl Gourami Don't Make an Easy Pair
The size gap is 3.3" — Neon Tetra (1.2") and Pearl Gourami (4.5"). A fish that fits in another fish's mouth will eventually end up there.
Neon Tetra
Paracheirodon innesi
| Adult Size: | 1.2" |
| Temperament: | peaceful |
| Min Tank: | 10 gal |
| Temperature: | 68-77°F |
| pH Range: | 5.5-7.0 |
Pearl Gourami
Trichopodus leerii
| Adult Size: | 4.5" |
| Temperament: | peaceful |
| Min Tank: | 20 gal |
| Temperature: | 75-82°F |
| pH Range: | 6.0-7.5 |
Water Parameter Overlap
| Parameter | Neon Tetra | Pearl Gourami | Overlap |
|---|---|---|---|
| Temperature | 68-77°F | 75-82°F | 2°F ✓ |
| pH | 5.5-7.0 | 6.0-7.5 | 1.0 ✓ |
Compatibility Breakdown
Temperament Match: peaceful + peaceful. Both peaceful → minimal conflict.
⚠️ Size Predation Risk: Neon Tetra (1.2") vs Pearl Gourami (4.5"). A 3.3" 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: 20 gallons — sized for the larger fish in the pair.
- Temperature: keep it between 75°F and 77°F.
- pH: maintain 6.0 – 7.0.
- Hiding spots: essential for Neon 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:
High-quality flake food for community gouramis
Explore Related Checks
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Accuracy note: This tool uses expert rules + FishBase.org data. Individual fish behavior varies — a peaceful individual Neon 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.