Compatibility Overview
Nerite Snail and Swordtail can potentially coexist, but the combination requires careful attention. Some combination of water parameter differences, size mismatch, or temperament issues make this pair challenging. A larger tank (minimum 55 gallons), dense planting, and close monitoring are essential.
| Factor | Nerite Snail | Swordtail | Verdict |
|---|---|---|---|
| Temperature | 65–85°F | 65–80°F | ✅ 65–80°F |
| pH Range | 6.5–8.5 | 7.0–8.3 | ✅ 7.0–8.3 |
| Temperament | peaceful | peaceful | ✅ Compatible |
| Adult Size | 1 in | 5 in | ❌ 5× difference |
| Min. Group | 1+ | 3+ | See below |
| Min. Tank Size | 55 gallons (for both species) | — | |
✅ Compatibility Positives
⚠️ Caution Points
Species Profiles
Nerite Snail — Nerita spp.
Outstanding algae-eating snails that do not reproduce in freshwater. Extremely hardy and compatible with virtually all peaceful fish.
→ Full Nerite Snail care guide
Swordtail — Xiphophorus hellerii
Hardy livebearer with a distinctive elongated lower tail fin in males. Peaceful community fish that tolerate a wide temperature range.
Frequently Asked Questions
Can Nerite Snail live with Swordtail?
With significant caution and a larger tank. Nerite Snail and Swordtail can potentially coexist, but the combination requires careful attention. Some combination of water parameter differences, size mismatch, or temperament issues make this pair challenging. A larger tank (minimum 55 gallons), dense planting, and close monitoring are essential.
What tank size do I need for Nerite Snail and Swordtail together?
A minimum of 55 gallons is recommended for keeping Nerite Snail and Swordtail together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Nerite Snail and Swordtail?
65–80°F
Is a Nerite Snail aggressive toward a Swordtail?
Nerite Snail is peaceful and Swordtail is peaceful. Large size difference: Swordtail (5 in) may predate on Nerite Snail (1 in).