Can Molly live with Tiger Barb?
🟡 CAUTION
Case-by-case. Watch group sizes, tank size, and feeding zones.
Molly
Poecilia sphenops
| Adult Size: | 4.5" |
| Temperament: | peaceful |
| Min Tank: | 20 gal |
| Temperature: | 72-82°F |
| pH Range: | 7.0-8.0 |
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 | Molly | Tiger Barb | Overlap |
|---|---|---|---|
| Temperature | 72-82°F | 74-79°F | 5°F ✓ |
| pH | 7.0-8.0 | 6.0-7.0 | No overlap ✗ |
Why CAUTION?
Temperament Match: peaceful + semi-aggressive. Semi-aggressive → watch territory and feeding.
Score: 70/100 (CAUTION threshold: GOOD ≥80, CAUTION ≥50, RISKY <50).
🔧 Tank Stocking Calculator
Enter tank size to calculate safe stocking levels:
Recommended Equipment
Based on tank size 20+ gallons:
Tetra Whisper Internal Filter — $19.99
Quiet internal filter for 20-gallon tanks
Accuracy note: This tool uses expert rules + FishBase.org data. Individual fish behavior varies. Always observe, quarantine new arrivals for 2-4 weeks, and avoid overcrowding.