Can Mystery Snail live with Bristlenose Pleco?
These two species are usually compatible in community tanks.
Why Mystery Snail and Bristlenose Pleco Work
These two species overlap in both temperature (73–82°F overlap) and pH (7.0-7.5 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 (peaceful + peaceful) is low-conflict. In a 30+ gallon tank with adequate hiding spots, these two can coexist with minimal problems.
Mystery Snail
Pomacea bridgesii
| Adult Size: | 2.0" |
| Temperament: | peaceful |
| Min Tank: | 5 gal |
| Temperature: | 68-84°F |
| pH Range: | 7.0-8.0 |
Bristlenose Pleco
Ancistrus cirrhosus
| Adult Size: | 5.0" |
| Temperament: | peaceful |
| Min Tank: | 30 gal |
| Temperature: | 73-82°F |
| pH Range: | 6.5-7.5 |
Water Parameter Overlap
| Parameter | Mystery Snail | Bristlenose Pleco | Overlap |
|---|---|---|---|
| Temperature | 68-84°F | 73-82°F | 9°F ✓ |
| pH | 7.0-8.0 | 6.5-7.5 | 0.5 ✓ |
Compatibility Breakdown
Temperament Match: peaceful + peaceful. Both peaceful → minimal conflict.
⚠️ Size Predation Risk: Mystery Snail (2.0") vs Bristlenose Pleco (5.0"). A 3.0" gap — the larger fish will view the smaller fish as food.
Score: 100.0/100 (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 73°F and 82°F.
- pH: maintain 7.0 – 7.5.
- Hiding spots: essential for Mystery Snail — 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 plecos
Explore Related Checks
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Accuracy note: This tool uses expert rules + FishBase.org data. Individual fish behavior varies — a peaceful individual Mystery Snail 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.