The mystery snail (Pomacea diffusa) is a peaceful snail that grows to about 2 inches and spends its time near the bottom. It can be kept on its own, in a tank of 10 gallons or more, at 68–82°F and pH 7–8.
10 galsmallest tank
2″adult size
68–82°Ftemperature
7–8pH
1+group size
Peacefultemperament
Good tankmates
Avoid
- ✕Paradise fish: Paradise fish is aggressive and best kept alone.
- ✕Angelfish: Angelfish grows big enough to eat Mystery snail.
- ✕Convict cichlid: Convict cichlid is aggressive and best kept alone.
- ✕Oscar: Oscar is aggressive and best kept alone.
- ✕Kuhli loach: Mystery snail and Kuhli loach prefer different water (pH 7–8 vs 5.5–6.5).
- ✕Pea puffer: Pea puffer is aggressive and best kept alone.
From TankCoach's own species data: common hobby guidance for adults, rounded. Individual fish vary. Not veterinary advice.