Can Gold Barb live with Siamese Algae Eater?
High risk due to water mismatch, aggression, or predation.
Why Gold Barb and Siamese Algae Eater Don't Make an Easy Pair
The size gap is 3.0" — Gold Barb (3.0") and Siamese Algae Eater (6.0"). A fish that fits in another fish's mouth will eventually end up there.
Gold Barb
Puntius semifasciolatus
| Adult Size: | 3.0" |
| Temperament: | peaceful |
| Min Tank: | 20 gal |
| Temperature: | 64-77°F |
| pH Range: | 6.0-8.0 |
Siamese Algae Eater
Crossocheilus oblongus
| Adult Size: | 6.0" |
| Temperament: | peaceful |
| Min Tank: | 30 gal |
| Temperature: | 75-82°F |
| pH Range: | 6.5-7.5 |
Water Parameter Overlap
| Parameter | Gold Barb | Siamese Algae Eater | Overlap |
|---|---|---|---|
| Temperature | 64-77°F | 75-82°F | 2°F ✓ |
| pH | 6.0-8.0 | 6.5-7.5 | 1.0 ✓ |
Compatibility Breakdown
Temperament Match: peaceful + peaceful. Both peaceful → minimal conflict.
⚠️ Size Predation Risk: Gold Barb (3.0") vs Siamese Algae Eater (6.0"). A 3.0" 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: 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 Gold Barb — 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:
Herbivore sinking rounds for algae eaters
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Accuracy note: This tool uses expert rules + FishBase.org data. Individual fish behavior varies — a peaceful individual Gold Barb 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.