What fish can live with Mystery Snail?

Use the "Often compatible" lists as a shortlist, not a stocking plan. Always run the pair tool and check the footprint of your actual tank first. Verify behaviour for Mystery Snail against your own reading before you buy.

What tank mates should you avoid with Mystery Snail?

Avoid Assassin Snail, Pea Puffer, Oscar, Jack Dempsey, Clown Loach based on size, temperament, or predation risk on file.

What size tank do Mystery Snail need for a community?

40L is the planning floor for adult swimming space and bioload headroom. Long-term, a 50L+ tank lets adults use the full footprint without crowding the next species. Footprint, meaning length and front-to-back depth, matters as much as raw volume for active or territorial species.

Mystery Snail tank mates

A peaceful glass-walker that ignores live plants. Bigger and messier than nerites, with a real bioload and a calcium dependency. Confirm the species at the shop to avoid the banned channelled apple snail.

Evidence: partially verified

Confidence: medium

Lists below are built from this species record (safest, best with, risky, unsafe) — each link opens a pair-level check, not a guarantee.

← Full Mystery Snail profile·Compatibility checker·Tank builder·More invertebrate

Best tank mates (on file)

Merged from conservative safest and best with fields — de-duplicated by species.

Amano Shrimp Pair check
The Mystery Snail profile lists Amano Shrimp as both safe and a recommended pairing. Amano Shrimp is a peaceful beginner-care species with a 40L minimum. Run the pair checker for your specific tank before stocking.
Cherry Barb Pair check
The Mystery Snail profile lists Cherry Barb as both safe and a recommended pairing. Cherry Barb schools in groups of 6 or more, so plan room for the whole group rather than one fish.
Cherry Shrimp Pair check
The Mystery Snail profile lists Cherry Shrimp as both safe and a recommended pairing. Cherry Shrimp schools in groups of 10 or more, so plan room for the whole group rather than one fish.
Corydoras Catfish Pair check
The Mystery Snail profile lists Corydoras Catfish as both safe and a recommended pairing. Corydoras Catfish schools in groups of 6 or more, so plan room for the whole group rather than one fish.
Harlequin Rasbora Pair check
The Mystery Snail profile lists Harlequin Rasbora as both safe and a recommended pairing. Harlequin Rasbora schools in groups of 6 or more, so plan room for the whole group rather than one fish.
Neon Tetra Pair check
The Mystery Snail profile lists Neon Tetra as both safe and a recommended pairing. Neon Tetra schools in groups of 6 or more, so plan room for the whole group rather than one fish. Water parameters barely overlap between the two, so check the temperature and pH ranges on both profiles before stocking.

Risky or situational

From risky tank mates and broad avoid with (excluding “unsafe” below). May work with species-only setups, more water, or mature systems — read the pair page.

Yoyo Loach Open pair check
Yoyo Loach is rated semi-aggressive, so expect chasing, fin damage, or display behaviour directed at Mystery Snail. Run the pair checker before stocking.

Fish to avoid with Mystery Snail

From the unsafe list — predation, aggression, or space rules on this profile.

Assassin Snail See why (pair)
Assassin Snail conflicts with Mystery Snail on temperament, predation, or footprint. The juvenile size in a shop tank is not the figure that matters here.
Pea Puffer See why (pair)
Pea Puffer conflicts with Mystery Snail on temperament, predation, or footprint. The juvenile size in a shop tank is not the figure that matters here.
Oscar See why (pair)
Oscar reaches 35cm and is flagged predatory. Mystery Snail at 5cm is prey-sized for it. Oscar needs at least 300L, far above the 40L minimum for Mystery Snail. The tank that houses one stresses the other. Oscar is rated aggressive and Mystery Snail is rated peaceful. No community-style planning carries that gap.
Jack Dempsey See why (pair)
Jack Dempsey reaches 25cm and is flagged predatory. Mystery Snail at 5cm is prey-sized for it. Jack Dempsey needs at least 200L, far above the 40L minimum for Mystery Snail. The tank that houses one stresses the other. Jack Dempsey is rated aggressive and Mystery Snail is rated peaceful. No community-style planning carries that gap.
Clown Loach See why (pair)
Clown Loach needs at least 400L, far above the 40L minimum for Mystery Snail. The tank that houses one stresses the other.

Tank size and groups

Published minimum for Mystery Snail: 40L — group minimum 1 .
Compatibility changes when the tank is too short for turning, too little for a real school, or too warm for one species and not the other — that is why pair checks include tank context, not only temperament.
Nearest litre hub to this minimum: 40L hub.

Plan before you buy

Pair checks for every mix, then multi-species stocking in the builder.

Open compatibility checker Tank builder

Filtration & heating

A 40L minimum tank for Mystery Snail needs a filter rated for at least 160L/hr turnover and a heater maintaining 18–28°C.

Filter buying guide →Heater buying guide →Beginner plants guide →