Goldfish and Mystery Snail Compatibility Overview
Short answer: No. Goldfish is a cool-water fish and Mystery Snail is tropical. Keep them in separate tanks, or pick one of the safer tank mates listed below.
Goldfish and Mystery Snail are generally not recommended to be housed together. Goldfish is a cool-water fish and Mystery Snail is tropical, so the usable temperature range decides this pairing. The adult size gap creates a meaningful predation risk. Review the behavior and water details before deciding whether to attempt the pairing.
| Factor | Goldfish | Mystery Snail | Verdict |
|---|---|---|---|
| Temperature | 50โ74ยฐF | 68โ80ยฐF | โ 68โ74ยฐF |
| pH Range | 6.5โ8.0 | 7.0โ8.0 | โ 7.0โ8.0 |
| Temperament | peaceful | peaceful | โ Compatible |
| Adult Size | 12 in | 2 in | โ 6ร difference |
| Min. Group | 1+ | 1+ | See below |
| Min. Tank Size | 100 gallons (for both species) | โ | |
Compatibility Positives
Incompatibility Reasons
Species Profiles
Goldfish โ Carassius auratus
Classic pond and aquarium fish that prefer cool water. Heavy waste producers that require robust filtration. Will eat small fish and shrimp.
Mystery Snail โ Pomacea bridgesii
Large, peaceful aquarium snails that graze on algae and detritus. Shell provides some protection but can be harassed by certain fish.
Frequently Asked Questions
Can Goldfish live with Mystery Snail?
Generally not recommended. Goldfish and Mystery Snail are generally not recommended to be housed together. Goldfish is a cool-water fish and Mystery Snail is tropical, so the usable temperature range decides this pairing. The adult size gap creates a meaningful predation risk. Review the behavior and water details before deciding whether to attempt the pairing.
What tank size do I need for Goldfish and Mystery Snail together?
A minimum of 100 gallons is recommended for keeping Goldfish and Mystery Snail together. A larger tank improves water stability and reduces territorial conflict.
What temperature suits both Goldfish and Mystery Snail?
68โ74ยฐF โ inside Goldfish's 50โ74ยฐF and Mystery Snail's 68โ80ยฐF.
Is a Goldfish aggressive toward a Mystery Snail?
The adult size gap creates a meaningful predation risk.
Safer Tank Mates for Goldfish and Mystery Snail
The highest-scoring compatible partners for each species in our compatibility data.
For Goldfish
- Weather Loach โ 98/100
- Bristlenose Pleco โ 87/100
- Denison Barb โ 87/100
- Koi โ 86/100
- Swordtail โ 79/100
For Mystery Snail
- Corydoras โ 98/100
- Platy โ 96/100
- Zebra Danio โ 96/100
- Cherry Barb โ 94/100
- Guppy โ 92/100
Related Compatibility Guides
Tank Size for Goldfish and Mystery Snail
Use the scenario that matches the actual group sizes and temperament you plan to keep.
| Scenario | Tank | When it applies |
|---|---|---|
| Minimum viable | 100 gal | Only for the recommended minimum groups, mature filtration, and close monitoring. |
| Recommended community | 150 gal | Adds territory, swimming room, and a safer buffer for behavior. |
| Low-conflict setup | 180 gal | Best when keeping larger schools or reducing territorial pressure. |