Can Boeseman's Rainbowfish live with Cherry Barb?
Case-by-case. Watch group sizes, tank size, and feeding zones.
Why Boeseman's Rainbowfish and Cherry Barb Don't Make an Easy Pair
They can coexist, but you need to manage the setup carefully. The temperament combination (peaceful+peaceful) can work, but you will need to watch them at feeding time for the first week.
Boeseman's Rainbowfish
Melanotaenia boesemani
| Adult Size: | 4.5" |
| Temperament: | peaceful |
| Min Tank: | 30 gal |
| Temperature: | 75-82°F |
| pH Range: | 7.0-8.0 |
Cherry Barb
Puntius titteya
| Adult Size: | 2.0" |
| Temperament: | peaceful |
| Min Tank: | 15 gal |
| Temperature: | 73-81°F |
| pH Range: | 6.0-7.5 |
Water Parameter Overlap
| Parameter | Boeseman's Rainbowfish | Cherry Barb | Overlap |
|---|---|---|---|
| Temperature | 75-82°F | 73-81°F | 6°F ✓ |
| pH | 7.0-8.0 | 6.0-7.5 | 0.5 ✓ |
Compatibility Breakdown
Temperament Match: peaceful + peaceful. Both peaceful → minimal conflict.
⚠️ Size Predation Risk: Boeseman's Rainbowfish (4.5") vs Cherry Barb (2.0"). A 2.5" gap — the larger fish will view the smaller fish as food.
Score: 70.0/100 (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 81°F.
- pH: maintain 7.0 – 7.5.
- Hiding spots: essential for Boeseman's Rainbowfish — 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:
High-quality flake food for rainbowfish
Explore Related Checks
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Accuracy note: This tool uses expert rules + FishBase.org data. Individual fish behavior varies — a peaceful individual Boeseman's Rainbowfish 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.