Can Coral Beauty Angelfish live with Electric Blue Crayfish?
High risk due to water mismatch, aggression, or predation.
Why Coral Beauty Angelfish and Electric Blue Crayfish Don't Make an Easy Pair
The size gap is 2.0" — Coral Beauty Angelfish (4.0") and Electric Blue Crayfish (6.0"). A fish that fits in another fish's mouth will eventually end up there.
Coral Beauty Angelfish
Centropyge loriculus
| Adult Size: | 4.0" |
| Temperament: | semi-aggressive |
| Min Tank: | 30 gal |
| Temperature: | 74-82°F |
| pH Range: | 8.1-8.4 |
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 |
Water Parameter Overlap
| Parameter | Coral Beauty Angelfish | Electric Blue Crayfish | Overlap |
|---|---|---|---|
| Temperature | 74-82°F | 65-80°F | 6°F ✓ |
| pH | 8.1-8.4 | 6.5-8.0 | No overlap ✗ |
Compatibility Breakdown
Temperament Match: semi-aggressive + aggressive. One aggressive → predation/nipping risk.
⚠️ Size Predation Risk: Coral Beauty Angelfish (4.0") vs Electric Blue Crayfish (6.0"). A 2.0" gap — the larger fish will view the smaller fish as food.
Score: 35/100 (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 80°F.
- pH: no shared range. One species will be outside its tolerance regardless of what you set.
- Hiding spots: essential for Coral Beauty Angelfish — 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:
Frozen food formula for marine angelfish
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Accuracy note: This tool uses expert rules + FishBase.org data. Individual fish behavior varies — a semi-aggressive individual Coral Beauty Angelfish 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.