Can Siamese Algae Eater live with Tiger Barb?
High risk due to water mismatch, aggression, or predation.
Why Siamese Algae Eater and Tiger Barb Don't Make an Easy Pair
The size gap is 3.0" — Siamese Algae Eater (6.0") and Tiger Barb (3.0"). A fish that fits in another fish's mouth will eventually end up there.
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 |
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 | Siamese Algae Eater | Tiger Barb | Overlap |
|---|---|---|---|
| Temperature | 75-82°F | 74-79°F | 4°F ✓ |
| pH | 6.5-7.5 | 6.0-7.0 | 0.5 ✓ |
Compatibility Breakdown
Temperament Match: peaceful + semi-aggressive. Semi-aggressive → watch territory and feeding.
⚠️ Size Predation Risk: Siamese Algae Eater (6.0") vs Tiger Barb (3.0"). 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 79°F.
- pH: maintain 6.5 – 7.0.
- Hiding spots: essential for Siamese Algae Eater — 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
Explore Related Checks
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Accuracy note: This tool uses expert rules + FishBase.org data. Individual fish behavior varies — a peaceful individual Siamese Algae Eater 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.