Compatibility Overview
Discus and Nerite Snail are generally not recommended to be housed together. The issues listed above — whether water parameter incompatibility, predation risk, or aggression — create conditions where one or both fish are likely to suffer harm or chronic stress.
| Factor | Discus | Nerite Snail | Verdict |
|---|---|---|---|
| Temperature | 82–88°F | 65–85°F | ⚠️ 82–85°F (narrow) |
| pH Range | 5.0–7.0 | 6.5–8.5 | ⚠️ 6.5–7.0 (narrow) |
| Temperament | semi | peaceful | ⚠️ Monitor |
| Adult Size | 8 in | 1 in | ❌ 8× difference |
| Min. Group | 5+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | — | |
✅ Compatibility Positives
❌ Incompatibility Reasons
Species Profiles
Discus — Symphysodon spp.
The 'king of the aquarium' — beautiful but demanding. Requires very warm, soft, acidic water that excludes most community fish.
Nerite Snail — Nerita spp.
Outstanding algae-eating snails that do not reproduce in freshwater. Extremely hardy and compatible with virtually all peaceful fish.
Frequently Asked Questions
Can Discus live with Nerite Snail?
Generally not recommended. Discus and Nerite Snail are generally not recommended to be housed together. The issues listed above — whether water parameter incompatibility, predation risk, or aggression — create conditions where one or both fish are likely to suffer harm or chronic stress.
What tank size do I need for Discus and Nerite Snail together?
A minimum of 100 gallons is recommended for keeping Discus and Nerite Snail together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Discus and Nerite Snail?
82–85°F (narrow)
Is a Discus aggressive toward a Nerite Snail?
Discus is semi and Nerite Snail is peaceful. Narrow temperature overlap (82–85°F) — keeping the tank at exactly 83–84°F is needed for both species.