Can Black Skirt Tetra live with Weather Loach?
These two species are usually compatible in community tanks.
Why Black Skirt Tetra and Weather Loach Work
These two species overlap in both temperature (68–77°F overlap) and pH (6.0-7.5 overlap range). Their temperature tolerances are close enough, and neither fish pushes the pH so far outside the other's comfort zone that it creates chronic stress. The temperament match (semi-aggressive + peaceful) is low-conflict. In a 30+ gallon tank with adequate hiding spots, these two can coexist with minimal problems.
Black Skirt Tetra
Gymnocorymbus ternetzi
| Adult Size: | 2.5" |
| Temperament: | semi-aggressive |
| Min Tank: | 15 gal |
| Temperature: | 68-79°F |
| pH Range: | 6.0-7.5 |
Weather Loach
Misgurnus anguillicaudatus
| Adult Size: | 10.0" |
| Temperament: | peaceful |
| Min Tank: | 30 gal |
| Temperature: | 50-77°F |
| pH Range: | 6.0-8.0 |
Water Parameter Overlap
| Parameter | Black Skirt Tetra | Weather Loach | Overlap |
|---|---|---|---|
| Temperature | 68-79°F | 50-77°F | 9°F ✓ |
| pH | 6.0-7.5 | 6.0-8.0 | 1.5 ✓ |
Compatibility Breakdown
Temperament Match: semi-aggressive + peaceful. Semi-aggressive → watch territory and feeding.
⚠️ Size Predation Risk: Black Skirt Tetra (2.5") vs Weather Loach (10.0"). A 7.5" gap — the larger fish will view the smaller fish as food.
Score: 110.0/100 (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 68°F and 77°F.
- pH: maintain 6.0 – 7.5.
- Hiding spots: essential for Black Skirt Tetra — 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 wafers for loaches and bottom feeders
Explore Related Checks
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Accuracy note: This tool uses expert rules + FishBase.org data. Individual fish behavior varies — a semi-aggressive individual Black Skirt Tetra 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.