Can Electric Blue Crayfish live with Tiger Barb?
High risk due to water mismatch, aggression, or predation.
Why Electric Blue Crayfish and Tiger Barb Don't Make an Easy Pair
The size gap is 3.0" — Electric Blue Crayfish (6.0") and Tiger Barb (3.0"). A fish that fits in another fish's mouth will eventually end up there.
Electric Blue Crayfish
Procambarus alleni
| Adult Size: | 6.0" |
| Temperament: | aggressive |
| Min Tank: | 30 gal |
| Temperature: | 65-80°F |
| pH Range: | 6.5-8.0 |
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 | Electric Blue Crayfish | Tiger Barb | Overlap |
|---|---|---|---|
| Temperature | 65-80°F | 74-79°F | 5°F ✓ |
| pH | 6.5-8.0 | 6.0-7.0 | 0.5 ✓ |
Compatibility Breakdown
Temperament Match: aggressive + semi-aggressive. One aggressive → predation/nipping risk.
⚠️ Size Predation Risk: Electric Blue Crayfish (6.0") vs Tiger Barb (3.0"). A 3.0" gap — the larger fish will view the smaller fish as food.
Score: 35.0/100 (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 74°F and 79°F.
- pH: maintain 6.5 – 7.0.
- Hiding spots: essential for Tiger 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:
Sinking food for crayfish and crustaceans
Explore Related Checks
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Accuracy note: This tool uses expert rules + FishBase.org data. Individual fish behavior varies — a aggressive individual Electric Blue Crayfish 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.