Can Coral Beauty Angelfish live with Hillstream Loach?
High risk due to water mismatch, aggression, or predation.
Why Coral Beauty Angelfish and Hillstream Loach Don't Make an Easy Pair
The temperament mismatch (semi-aggressive + peaceful) makes this a high-risk pairing. Injuries, stress, and hiding behavior are likely.
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 |
Hillstream Loach
Sewellia lineolata
| Adult Size: | 2.5" |
| Temperament: | peaceful |
| Min Tank: | 20 gal |
| Temperature: | 64-75°F |
| pH Range: | 6.5-7.5 |
Water Parameter Overlap
| Parameter | Coral Beauty Angelfish | Hillstream Loach | Overlap |
|---|---|---|---|
| Temperature | 74-82°F | 64-75°F | 1°F ✓ |
| pH | 8.1-8.4 | 6.5-7.5 | No overlap ✗ |
Compatibility Breakdown
Temperament Match: semi-aggressive + peaceful. Semi-aggressive → watch territory and feeding.
Score: 30/100 (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 75°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.