TankStockingMystery Snail Tank Mates
Mystery snails are peaceful, hardy algae-grazers — an easy clean-up companion for almost any community.
They mind their own business, do not breed out of control in the way pest snails do, and clear the engine against nearly every fish. The only watch-outs are known snail-eaters (loaches, pufferfish) and fish that might nip their tentacles. Hard water keeps their shells healthy.
Mystery Snail key facts
The sourced figures the engine uses to judge Mystery Snail pairings.
| Adult size | 5 cm |
|---|---|
| Minimum tank | 10 US gal |
| Minimum group | 1 |
| Temperament | Peaceful |
| Temperature range | 20–28°C |
| pH range | 7–8 |
| Bioload | Medium |
| Swim level | All levels |
| Beginner-friendly | Yes |
Sources & confidence (11 species)
These back the Mystery Snail figures and the recommended tank mates above. Each figure is read from the TankStocking species database (v2026.06); below is the care reference behind it and how confident we are in that data. Confidence reflects the source quality, not whether any pairing is safe. Full source list and the welfare model are on the methodology page.
- Mystery Snail Pomacea bridgesii — Aquarium Breeder; Aquatic Arts mystery snail guides high confidence
- Amano Shrimp Caridina multidentata — Aquarium Co-Op amano shrimp care; Aquadiction high confidence
- Bamboo Shrimp (Wood/Fan Shrimp) Atyopsis moluccensis — Aquariadise (aquariadise.com/caresheet-bamboo-shrimp-atyopsis-moluccensis) high confidence
- Black Neon Tetra Hyphessobrycon herbertaxelrodi — Seriously Fish / Aqua-Fish (Hyphessobrycon herbertaxelrodi) high confidence
- Black Phantom Tetra Hyphessobrycon megalopterus — Seriously Fish (Hyphessobrycon megalopterus) high confidence
- Bleeding Heart Tetra Hyphessobrycon erythrostigma — Seriously Fish (Hyphessobrycon erythrostigma) high confidence
- Bronze Corydoras Corydoras aeneus — Seriously Fish (seriouslyfish.com/species/corydoras-aeneus) high confidence
- Cardinal Tetra Paracheirodon axelrodi — Seriously Fish (seriouslyfish.com/species/paracheirodon-axelrodi) high confidence
- Checker Barb Oliotius oligolepis — Seriously Fish — Oliotius oligolepis (https://www.seriouslyfish.com/species/oliotius-oligolepis/) high confidence
- Cherry Barb Puntius titteya — Seriously Fish (Puntius titteya) seriouslyfish.com/species/puntius-titteya high confidence
- Cherry Shrimp Neocaridina davidi — Aquarium Co-Op cherry shrimp care; The Shrimp Farm high confidence
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Verdict
Top Mystery Snail tank mates
A ranked shortlist: the species the engine clears with Mystery Snail and that suit its size and temperament best — tap a name for its care guide, or use + Add to test the pairing in the planner.
| Species | Adult size | Temp range | Min group | Swim level | Why it works | Plan |
|---|---|---|---|---|---|---|
| Amano Shrimp | 5 cm | 18–27°C | 3+ (pair/group) | All levels | peacefulsize-safebeginner-friendlyPeaceful temperament, similar adult size | + Add |
| Bamboo Shrimp (Wood/Fan Shrimp) | 10 cm | 20–27°C | 1 | All levels | peacefulsize-safebeginner-friendlyPeaceful temperament, similar adult size | + Add |
| Black Neon Tetra | 3.5 cm | 23–27°C | 6+ (shoal) | Midwater | peacefulsize-safebeginner-friendlyPeaceful temperament, similar adult size | + Add |
| Black Phantom Tetra | 3.6 cm | 20–28°C | 6+ (shoal) | Midwater | peacefulsize-safebeginner-friendlyPeaceful temperament, similar adult size | + Add |
| Bleeding Heart Tetra | 6 cm | 21–28°C | 8+ (shoal) | Midwater | peacefulsize-safebeginner-friendlyPeaceful temperament, similar adult size | + Add |
| Bronze Corydoras | 7 cm | 22–26°C | 6+ (shoal) | Bottom | peacefulsize-safebeginner-friendlyPeaceful temperament, similar adult size | + Add |
| Cardinal Tetra | 3 cm | 23–29°C | 6+ (shoal) | Midwater | peacefulsize-safebeginner-friendlyPeaceful temperament, similar adult size | + Add |
| Checker Barb | 5 cm | 20–25°C | 6+ (shoal) | Midwater | peacefulsize-safebeginner-friendlyPeaceful temperament, similar adult size | + Add |
| Cherry Barb | 5 cm | 23–27°C | 6+ (shoal) | Midwater | peacefulsize-safebeginner-friendlyPeaceful temperament, similar adult size | + Add |
| Cherry Shrimp | 3 cm | 18–28°C | 6+ (pair/group) | All levels | peacefulsize-safebeginner-friendlyPeaceful temperament, similar adult size | + Add |
No tank mates match these filters — try removing one.
Other engine-cleared options (not necessarily ideal)
These clear TankStocking's hard welfare checks with Mystery Snail, but are larger, bolder, or otherwise less ideal than the shortlist above — read up before committing.
Anabantoids (Bettas/Gouramis)
Barbs
Cichlids
Coldwater
Corydoras
Invertebrates
Loaches
Oddball
Plecos & Catfish
Rainbowfish
Rasboras
Best avoided
A hard welfare check fires for each of these — don't mix them with Mystery Snail.
- Kissing Gourami — Predation risk
- Snakeskin Gourami — Predation risk
- Bala Shark — Predation risk
- Tinfoil Barb — Predation risk
- Discus — Temperature clash
- Electric Blue Acara — Predation risk
- Firemouth Cichlid — Predation risk
- Green Severum — Predation risk
- Oscar — Predation risk
- Golden Wonder Killifish (Striped Panchax) — Predation risk
- Common Pleco — Predation risk
- Pictus Catfish — Predation risk
Keeping Mystery Snail well: the detail
Beyond the table — the behaviour, the parameters that actually move the needle, and the mistakes that cost fish. Hobbyist context, not a verdict; the planner above is what judges your plan.
Water parameters in practice
Mystery snails need calcium and alkalinity for shell health — hard, alkaline water (pH 7–8) is ideal, and soft, acidic water pits and erodes the shell over time. Add a cuttlebone or a calcium source if your water is soft. They carry a real bio-load for an invertebrate, so allow roughly 2.5 gallons per snail and keep a gap above the waterline — they breathe air and travel.
Why Mystery Snail behaves the way it does
Mystery snails (Pomacea bridgesii) come from slow South American waters and, unlike pest snails, are plant-safe grazers that browse algae and detritus rather than healthy leaves. They are air-breathers that surface to refill a lung, and they lay distinctive clutches above the waterline — so they never plague a tank the way egg-in-water pest snails do. They are peaceful and surprisingly active.
Common Mystery Snail stocking mistakes
The first mistake is keeping them in soft, acidic water, which slowly destroys the shell. The second is housing them with snail-eaters — loaches, pufferfish, assassin snails — or with fin-nippers that pester their tentacles. The third is a tank filled to the brim, which leaves no air gap and lets a wandering snail escape.
Early signs something is wrong
A thin, pitted, or chalky white-eroding shell is the headline warning — a calcium or pH problem. A snail that stays sealed in its shell for days, floats, or smells foul when lifted may be dying. A healthy mystery snail moves steadily, grazes surfaces, and surfaces periodically to breathe.
How tank size changes the answer
A 10-gallon suits one or two; their bio-load means you should not crowd them despite their easy temperament. The extra volume buffers their waste and gives them surfaces to graze. Leave that air gap at the top whatever the size.
Mystery Snail community ideas
Each build is scored by the same engine as the planner — tap one to load it.
Snail + community
✓ Good starter plan1× Mystery Snail, 8× Neon Tetra, 6× Bronze Corydoras
A peaceful grazer alongside a standard tetra-and-cory community.
Load this build in the planner ↑Snail + livebearers
✓ Good starter plan2× Mystery Snail, 5× Platy
Hardy snails with hardy platies — a forgiving, low-maintenance 20-gallon.
Load this build in the planner ↑Common questions
What fish can live with mystery snails?
Almost any peaceful community fish: tetras, rasboras, livebearers, corydoras and gouramis. Avoid snail-eaters such as loaches, pufferfish and assassin snails, plus fin-nippers that pester their tentacles.
Do mystery snails reproduce rapidly?
No — unlike pest snails, they lay distinctive above-water egg clutches you can simply remove, so they do not overrun a tank.
Do mystery snails need special water?
They need enough calcium for a healthy shell, so moderately hard water (or a calcium supplement) is ideal. Soft, acidic water pits and erodes their shells over time.
More on Mystery Snail
Related guides on TankStocking — each scored by the same welfare engine as the planner.
Care guides
Compatibility checks
Browse all fish
Compatibility is a planning estimate: individual temperament, tank layout, and group sizes all matter. Cycle the tank, add fish gradually, and watch how they behave. See the methodology or browse the full freshwater fish list.