Mystery Snail: Tank Size, Tank Mates and How Many to Keep

Mystery snails are big, colorful snails with long feelers. They are fun to watch and safe with plants.

Adult size
2 in5 cm
Smallest tank
10 gallons38 liters
How many
One or more
Temperature
68–82 °F20–28 °C
pH
7–8.4
Temperament
Peaceful
Swims
On the bottom
Heater needed
In a cool room

What size tank do mystery snails need?

At least 10 gallons (38 liters). The smallest standard tank that works is the 10 gallon. A bigger tank is always easier to keep stable. Scientific name: Pomacea bridgesii.

How many mystery snails in each tank size?

This is how many each standard tank carries comfortably if mystery snails are the only animals in it. Share the tank with other species and the number goes down.

TankHow many mystery snails
5 gallonToo small
10 gallon1
20 gallon longup to 3
29 gallonup to 5
40 gallon breederup to 7
55 gallonup to 10
75 gallonup to 14
125 gallonup to 24

Check mystery snails against your own tank and other fish

Tank mates for mystery snails

These animals like the same water, are a safe size, and have a temper that fits. It is a match on paper: always watch new tankmates for the first week.

Poor matches

  • Fancy goldfish: Goldfish do best with other fancy goldfish.
  • Oscar: Oscar is aggressive and will bully or kill peaceful fish such as mystery snail.

Questions and answers

What size tank do mystery snails need?

At least 10 gallons (38 liters). The smallest standard tank that works is the 10 gallon. A bigger tank is always easier to keep stable.

How many mystery snails should be kept together?

One is fine. A mystery snail does not need company, though a large enough tank can hold more than one.

Can mystery snails live in a 10 gallon tank?

Yes. One mystery snail does well in a 10 gallon tank.

What temperature do mystery snails need?

68–82 °F (20–28 °C), with a pH of 7–8.4. A heater is only needed if your room gets cold.

Can mystery snails live with a betta?

Usually, yes, in a tank of 10 gallons (38 liters) or more. They like the same water: 75–82 °F (24–28 °C). Every betta has its own temper, so watch closely for the first week and have a spare tank ready.

More fish

Adult size, tank size and water ranges follow the mainstream care consensus (Seriously Fish species profiles and FishBase maximum lengths). Where sources differ we use the more cautious figure. Stocking numbers come from our stocking calculator.