Mystery Snail Tank Mates

Mystery Snail is peaceful, so its tank mates need choosing with care. Here are the 126 freshwater species that pair well with a mystery snail — plus the 0 to avoid — with a live checker you can tune to your own tank.

The best tank mates for a mystery snail

  • Ember Tetra ✅ Compatible
    Easy care · Peaceful · 2 cm · 24–28 °C (75–82 °F)
    Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
  • Neon Green Rasbora ✅ Compatible
    Easy care · Peaceful · 2 cm · 22–26 °C (72–79 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Ramshorn Snail ✅ Compatible
    Easy care · Peaceful · 2 cm · 20–28 °C (68–82 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Red Lip Nerite Snail ✅ Compatible
    Easy care · Peaceful · 2 cm · 22–28 °C (72–82 °F)
    Compatible on the things that matter: shared water near 22–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Dawn Tetra ✅ Compatible
    Easy care · Peaceful · 2.5 cm · 22–28 °C (72–82 °F)
    Both are peaceful, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
  • Nerite Snail ✅ Compatible
    Easy care · Peaceful · 2.5 cm · 22–28 °C (72–82 °F)
    Compatible on the things that matter: shared water near 22–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Assassin Snail ✅ Compatible
    Easy care · Peaceful · 3 cm · 22–26 °C (72–79 °F)
    Compatible on the things that matter: shared water near 22–26 °C, workable temperaments, and no predator-and-prey size gap.
  • Endler's Livebearer ✅ Compatible
    Easy care · Peaceful · 3 cm · 22–28 °C (72–82 °F)
    Both are peaceful, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
  • Glowlight Danio ✅ Compatible
    Easy care · Peaceful · 3 cm · 22–26 °C (72–79 °F)
    Both are peaceful, and their water overlaps around 22–26 °C — no size, zone or temperament conflicts.
  • Gold Ring Danio ✅ Compatible
    Easy care · Peaceful · 3 cm · 18–26 °C (64–79 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Malaysian Trumpet Snail ✅ Compatible
    Easy care · Peaceful · 3 cm · 21–27 °C (70–81 °F)
    Compatible on the things that matter: shared water near 21–27 °C, workable temperaments, and no predator-and-prey size gap.
  • Neon Tetra ✅ Compatible
    Easy care · Peaceful · 3 cm · 20–26 °C (68–79 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Tail-spot Corydoras ✅ Compatible
    Easy care · Peaceful · 3 cm · 22–28 °C (72–82 °F)
    Both are peaceful, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
  • Trinidad Guppy ✅ Compatible
    Easy care · Peaceful · 3 cm · 19–24 °C (66–75 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Pygmy Corydoras ✅ Compatible
    Easy care · Peaceful · 3.2 cm · 22–26 °C (72–79 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Glowlight Rasbora ✅ Compatible
    Easy care · Peaceful · 3.5 cm · 23–28 °C (73–82 °F)
    Both are peaceful, and their water overlaps around 23–28 °C — no size, zone or temperament conflicts.
  • Blue Danio ✅ Compatible
    Easy care · Peaceful · 4 cm · 21–26 °C (70–79 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Emperor Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 23–27 °C (73–81 °F)
    Both are peaceful, and their water overlaps around 23–27 °C — no size, zone or temperament conflicts.
  • Flame Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 22–28 °C (72–82 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Glowlight Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 22–28 °C (72–82 °F)
    Both are peaceful, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
  • Golden Dwarf Barb ✅ Compatible
    Easy care · Peaceful · 4 cm · 18–24 °C (64–75 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Phoenix Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 23–28 °C (73–82 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Red Phantom Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 22–28 °C (72–82 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Rosy Tetra ✅ Compatible
    Easy care · Peaceful · 4 cm · 22–28 °C (72–82 °F)
    Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.

Mystery Snail tank mates that can work with care

  • Afra Cichlid ⚠️ With caution
    Medium care · Semi-aggressive · 10 cm · 24–28 °C (75–82 °F)
    Expect Afra Cichlid to harass Mystery Snail at times; give dense cover and watch them at feeding.
  • African Butterfly Cichlid ⚠️ With caution
    Medium care · Semi-aggressive · 8 cm · 22–28 °C (72–82 °F)
    African Butterfly Cichlid clearly outsizes Mystery Snail and is semi-aggressive; risky unless the tank is big and well-planted.
  • Agassiz's Dwarf Cichlid ⚠️ With caution
    Medium care · Semi-aggressive · 9 cm · 24–30 °C (75–86 °F)
    Agassiz's Dwarf Cichlid is semi-aggressive and may chase or nip the smaller Mystery Snail — plant heavily and break up sight lines.
  • Alligator Gar ⚠️ With caution
    Hard care · Aggressive · 250 cm · 24–28 °C (75–82 °F)
    Alligator Gar clearly outsizes Mystery Snail and is aggressive; risky unless the tank is big and well-planted.
  • Altifrons Geophagus ⚠️ With caution
    Medium care · Semi-aggressive · 25 cm · 24–28 °C (75–82 °F)
    Expect Altifrons Geophagus to harass Mystery Snail at times; give dense cover and watch them at feeding.
  • Amano Shrimp ⚠️ With caution
    Easy care · Peaceful · 5 cm · 18–28 °C (64–82 °F)
    Mystery Snail may eat Amano Shrimp or pick off its shrimplets — a densely planted tank with moss gives them a fighting chance.
  • Amazon Puffer ⚠️ With caution
    Medium care · Peaceful · 8 cm · 23–28 °C (73–82 °F)
    Your 75 L tank is below the ~120 L this pairing really wants — crowding raises aggression.
  • Angelfish ⚠️ With caution
    Medium care · Semi-aggressive · 15 cm · 24–30 °C (75–86 °F)
    Expect Angelfish to harass Mystery Snail at times; give dense cover and watch them at feeding.

+ 206 more “with caution” pairings — see the interactive checker above.

Fish to avoid keeping with a mystery snail

No outright no-gos among the species in our database yet — but always avoid fish much larger, much more aggressive, or needing very different water.

Check any fish against a mystery snail

Dial in your exact tank size and filter by result — the checker scores every species in our database against a mystery snail, with the reasoning for each verdict.

Will it live with a Mystery Snail?

We compare each fish against your mystery snail on temperament, size, water parameters and swimming zone. Set your tank size and filter the results.

  • Adolf's Cory✅ Compatible
    Peaceful · 5.5 cm · Medium care · 22–26 °C (72–79 °F)
    • Both are peaceful, and their water overlaps around 22–26 °C — no size, zone or temperament conflicts.
    • Keep Adolf's Cory in a shoal of 6+ or it gets stressed and nippy.
  • Axelrod's Cory✅ Compatible
    Peaceful · 5 cm · Easy care · 23–28 °C (73–82 °F)
    • Compatible on the things that matter: shared water near 23–28 °C, workable temperaments, and no predator-and-prey size gap.
    • Keep Axelrod's Cory in a shoal of 6+ or it gets stressed and nippy.
  • Bandit Corydoras✅ Compatible
    Peaceful · 5 cm · Easy care · 22–27 °C (72–81 °F)
    • Compatible on the things that matter: shared water near 22–27 °C, workable temperaments, and no predator-and-prey size gap.
    • Keep Bandit Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Bloodfin Tetra✅ Compatible
    Peaceful · 5.5 cm · Easy care · 18–28 °C (64–82 °F)
    • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
    • Keep Bloodfin Tetra in a shoal of 6+ or it gets stressed and nippy.
  • Blue Turbo Snail✅ Compatible
    Peaceful · 5 cm · Medium care · 25–30 °C (77–86 °F)
    • Compatible on the things that matter: shared water near 25–28 °C, workable temperaments, and no predator-and-prey size gap.
  • Checkered Barb✅ Compatible
    Peaceful · 5 cm · Easy care · 20–25 °C (68–77 °F)
    • Both are peaceful, and their water overlaps around 20–25 °C — no size, zone or temperament conflicts.
    • Keep Checkered Barb in a shoal of 6+ or it gets stressed and nippy.
  • Cherry Barb✅ Compatible
    Peaceful · 5 cm · Easy care · 23–27 °C (73–81 °F)
    • Compatible on the things that matter: shared water near 23–27 °C, workable temperaments, and no predator-and-prey size gap.
    • Keep Cherry Barb in a shoal of 6+ or it gets stressed and nippy.
  • Cochu's Blue Tetra✅ Compatible
    Peaceful · 5 cm · Medium care · 22–28 °C (72–82 °F)
    • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
    • Keep Cochu's Blue Tetra in a shoal of 8+ or it gets stressed and nippy.
  • Firehead Tetra✅ Compatible
    Peaceful · 5 cm · Medium care · 24–28 °C (75–82 °F)
    • Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
    • Keep Firehead Tetra in a shoal of 8+ or it gets stressed and nippy.
  • Five-banded Barb✅ Compatible
    Peaceful · 5 cm · Easy care · 23–27 °C (73–81 °F)
    • Both are peaceful, and their water overlaps around 23–27 °C — no size, zone or temperament conflicts.
    • Keep Five-banded Barb in a shoal of 6+ or it gets stressed and nippy.
  • Forktail Blue-eye✅ Compatible
    Peaceful · 5 cm · Easy care · 22–28 °C (72–82 °F)
    • Compatible on the things that matter: shared water near 22–28 °C, workable temperaments, and no predator-and-prey size gap.
    • Keep Forktail Blue-eye in a shoal of 6+ or it gets stressed and nippy.
  • Peaceful · 5 cm · Medium care · 23–28 °C (73–82 °F)
    • Compatible on the things that matter: shared water near 23–28 °C, workable temperaments, and no predator-and-prey size gap.
    • Keep Half-striped Penguin Tetra in a shoal of 6+ or it gets stressed and nippy.
  • Harlequin Rasbora✅ Compatible
    Peaceful · 5 cm · Easy care · 23–28 °C (73–82 °F)
    • Both are peaceful, and their water overlaps around 23–28 °C — no size, zone or temperament conflicts.
    • Keep Harlequin Rasbora in a shoal of 6+ or it gets stressed and nippy.
  • Honey Gourami✅ Compatible
    Peaceful · 5 cm · Easy care · 22–28 °C (72–82 °F)
    • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
  • Horseman Cory✅ Compatible
    Peaceful · 5 cm · Medium care · 22–26 °C (72–79 °F)
    • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
    • Keep Horseman Cory in a shoal of 6+ or it gets stressed and nippy.
  • Peaceful · 5 cm · Easy care · 10–28 °C (50–82 °F)
    • Both are peaceful, and their water overlaps around 20–28 °C — no size, zone or temperament conflicts.
  • Julii Corydoras✅ Compatible
    Peaceful · 5 cm · Easy care · 23–26 °C (73–79 °F)
    • Compatible on the things that matter: shared water near 23–26 °C, workable temperaments, and no predator-and-prey size gap.
    • Keep Julii Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Masked Corydoras✅ Compatible
    Peaceful · 5 cm · Easy care · 22–28 °C (72–82 °F)
    • Both are peaceful, and their water overlaps around 22–28 °C — no size, zone or temperament conflicts.
    • Keep Masked Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Panda Corydoras✅ Compatible
    Peaceful · 5 cm · Medium care · 20–26 °C (68–79 °F)
    • Compatible on the things that matter: shared water near 20–26 °C, workable temperaments, and no predator-and-prey size gap.
    • Keep Panda Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Rummy-nose Tetra✅ Compatible
    Peaceful · 5 cm · Medium care · 23–29 °C (73–84 °F)
    • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
    • Keep Rummy-nose Tetra in a shoal of 6+ or it gets stressed and nippy.
  • Skunk Corydoras✅ Compatible
    Peaceful · 5 cm · Easy care · 22–26 °C (72–79 °F)
    • Both are peaceful; temperature, pH and hardness ranges all overlap and neither outsizes the other enough to be a threat.
    • Keep Skunk Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Stoliczka's Barb✅ Compatible
    Peaceful · 5 cm · Easy care · 20–26 °C (68–79 °F)
    • Both are peaceful, and their water overlaps around 20–26 °C — no size, zone or temperament conflicts.
    • Keep Stoliczka's Barb in a shoal of 6+ or it gets stressed and nippy.
  • Peaceful · 5 cm · Medium care · 24–28 °C (75–82 °F)
    • Both are peaceful, and their water overlaps around 24–28 °C — no size, zone or temperament conflicts.
    • Keep Xingu Black Neon Tetra in a shoal of 8+ or it gets stressed and nippy.
  • Zebra Danio✅ Compatible
    Peaceful · 5 cm · Easy care · 18–25 °C (64–77 °F)
    • Compatible on the things that matter: shared water near 20–25 °C, workable temperaments, and no predator-and-prey size gap.
    • Keep Zebra Danio in a shoal of 6+ or it gets stressed and nippy.
  • Amano Shrimp⚠️ With caution
    Peaceful · 5 cm · Easy care · 18–28 °C (64–82 °F)
    • Mystery Snail may eat Amano Shrimp or pick off its shrimplets — a densely planted tank with moss gives them a fighting chance.
  • Black Ruby Barb⚠️ With caution
    Semi-aggressive · 6 cm · Easy care · 22–26 °C (72–79 °F)
    • Black Ruby Barb and Mystery Snail are close in size, but the semi-aggressive one tends to dominate — add mystery snail in a group to spread the pressure.
    • Your 75 L tank is below the ~100 L this pairing really wants — crowding raises aggression.
    • Keep Black Ruby Barb in a shoal of 6+ or it gets stressed and nippy.
  • Black Skirt Tetra⚠️ With caution
    Semi-aggressive · 6 cm · Easy care · 20–26 °C (68–79 °F)
    • Black Skirt Tetra is semi-aggressive and may chase or nip the smaller Mystery Snail — plant heavily and break up sight lines.
    • Keep Black Skirt Tetra in a shoal of 6+ or it gets stressed and nippy.
  • Chocolate Gourami⚠️ With caution
    Peaceful · 5 cm · Hard care · 25–30 °C (77–86 °F)
    • Different pH ranges (7–8 vs 4–6); doable if you sit in the shared band, but not ideal long-term.
    • Water hardness preferences differ (Mystery Snail 7–18 vs Chocolate Gourami 0–5 dGH).
    • Keep Chocolate Gourami in a shoal of 6+ or it gets stressed and nippy.
  • Desert Goby⚠️ With caution
    Semi-aggressive · 6 cm · Easy care · 18–28 °C (64–82 °F)
    • Desert Goby and Mystery Snail are close in size, but the semi-aggressive one tends to dominate — add mystery snail in a group to spread the pressure.
  • Dwarf Chain Loach⚠️ With caution
    Peaceful · 6 cm · Medium care · 24–29 °C (75–84 °F)
    • Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
    • Keep Dwarf Chain Loach in a shoal of 6+ or it gets stressed and nippy.
  • Eastern Betta⚠️ With caution
    Semi-aggressive · 6 cm · Medium care · 24–28 °C (75–82 °F)
    • Eastern Betta and Mystery Snail are close in size, but the semi-aggressive one tends to dominate — add mystery snail in a group to spread the pressure.
  • GloFish Tetra⚠️ With caution
    Semi-aggressive · 6 cm · Easy care · 21–28 °C (70–82 °F)
    • Expect GloFish Tetra to harass Mystery Snail at times; give dense cover and watch them at feeding.
    • Keep GloFish Tetra in a shoal of 6+ or it gets stressed and nippy.
  • Humpbacked Tetra⚠️ With caution
    Semi-aggressive · 5 cm · Hard care · 24–28 °C (75–82 °F)
    • Humpbacked Tetra is semi-aggressive and may chase or nip the smaller Mystery Snail — plant heavily and break up sight lines.
    • Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
    • Keep Humpbacked Tetra in a shoal of 8+ or it gets stressed and nippy.
  • Morse Code Corydoras⚠️ With caution
    Peaceful · 5 cm · Medium care · 23–26 °C (73–79 °F)
    • Your 75 L tank is below the ~80 L this pairing really wants — crowding raises aggression.
    • Keep Morse Code Corydoras in a shoal of 6+ or it gets stressed and nippy.
  • Odessa Barb⚠️ With caution
    Semi-aggressive · 6 cm · Easy care · 20–26 °C (68–79 °F)
    • Odessa Barb is semi-aggressive and may chase or nip the smaller Mystery Snail — plant heavily and break up sight lines.
    • Keep Odessa Barb in a shoal of 6+ or it gets stressed and nippy.
  • Peaceful Betta⚠️ With caution
    Semi-aggressive · 6 cm · Medium care · 24–28 °C (75–82 °F)
    • Expect Peaceful Betta to harass Mystery Snail at times; give dense cover and watch them at feeding.
  • Silvertip Tetra⚠️ With caution
    Semi-aggressive · 5 cm · Easy care · 22–28 °C (72–82 °F)
    • Silvertip Tetra is semi-aggressive and may chase or nip the smaller Mystery Snail — plant heavily and break up sight lines.
    • Keep Silvertip Tetra in a shoal of 6+ or it gets stressed and nippy.
  • Spotfin Betta⚠️ With caution
    Semi-aggressive · 5 cm · Medium care · 23–28 °C (73–82 °F)
    • pH preferences only just meet (Mystery Snail 7–8 vs Spotfin Betta 4–6.5) — target the overlap and acclimate slowly.
    • One likes softer water and the other harder (7–18 vs 0–5 dGH) — a compromise, not a perfect match.
    • Spotfin Betta is semi-aggressive and may chase or nip the smaller Mystery Snail — plant heavily and break up sight lines.
  • Striped Red-Eye Puffer⚠️ With caution
    Aggressive · 5 cm · Hard care · 24–28 °C (75–82 °F)
    • Striped Red-Eye Puffer and Mystery Snail are close in size, but the aggressive one tends to dominate — add mystery snail in a group to spread the pressure.
  • Wine Red Betta⚠️ With caution
    Aggressive · 5 cm · Medium care · 24–28 °C (75–82 °F)
    • Different pH ranges (7–8 vs 4–6.5); doable if you sit in the shared band, but not ideal long-term.
    • Water hardness preferences differ (Mystery Snail 7–18 vs Wine Red Betta 0–4 dGH).
    • Expect Wine Red Betta to harass Mystery Snail at times; give dense cover and watch them at feeding.

Compatibility is computed from each species' care data — a strong starting point, not a guarantee. Individual temperament varies, so always introduce new fish slowly and watch them.

Setting up a mystery snail community tank

Give the group a stable, planted 75 L+ tank with a gentle filter, a reliable heater and plenty of cover — broken sight lines and hiding spots let mid-water and bottom dwellers keep out of each other's way. Cycle it fully and stock gradually.

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How to choose the right tank mates for a mystery snail

As a peaceful species, mystery snail is easily bullied — favour other calm, non-nippy fish and steer clear of boisterous or aggressive tank mates. It ranges across the whole water column, so tank mates that keep to one level help reduce friction.

Mystery Snail grows to about 5 cm, so avoid tank mates small enough to be seen as food — as a rule of thumb, skip anything under roughly 3 cm. Match its water, too: aim for 20–28 °C (68–82 °F), pH 7–8 and 7–18 dGH. Fish needing very different conditions — coldwater species, or hard-water lovers against a soft-water fish — rarely thrive side by side.

Mystery Snail doesn't need its own kind to feel secure; think twice before keeping more than one if it is territorial. Whatever you add, introduce new fish slowly, watch for bullying in the first days, and have a backup plan if temperaments clash.

Frequently asked questions

Can a mystery snail live with other fish?

Yes — with the right companions. Our checker finds 126 compatible freshwater species for mystery snail. Pick calm, similarly-sized fish that share its water needs and add them to a mature, well-planted tank.

What is the best tank mate for a mystery snail?

Easy, peaceful, similarly-sized species top the list — for example Ember Tetra, Neon Green Rasbora, Ramshorn Snail. Use the checker above to match against your own tank size.

What fish should you avoid keeping with a mystery snail?

No outright no-gos in our current database, but always avoid fish that are much larger, much more aggressive, or that need very different water.

How big a tank do mystery snail tank mates need?

Start from Mystery Snail's own minimum and scale up with every addition. The checker above defaults to a 75 L community tank and flags pairings that need more room — drag the slider to match your setup.