How big do apple snails get?
Common aquarium apple snails reach 5–8 cm (2–3 inches); the giant species (Pomacea maculata) grow to 10–15 cm (4–6 inches) — roughly the size of a golf ball to a billiard ball. Size depends heavily on species and tank space, so check which species you are actually buying.
How long do apple snails live?
1–3 years depending on species and temperature; warmer water (within range) speeds growth but shortens life.
Apple snail tank size and water parameters
A 10+ gallon tank for one or two apple snails — they are large, they eat a lot, and they produce a lot of waste. Temperature 20–26 °C, pH 7.0–8.0, with calcium available for shell growth. They need access to the surface to breathe air (they have a lung and a siphon), so keep the water level below the lid.
Are apple snails poisonous?
Not venomous, and their bite is a scrape, not a sting — but they can carry rat lungworm (Angiostrongylus cantonensis) parasites, which is why they should never be handled bare-handed and hands should always be washed after tank work. They are also illegal to own in some regions because they are invasive; check your local rules before buying.
What do apple snails eat?
Almost anything plant-based: algae, blanched vegetables (zucchini, spinach, kale, cucumber), sinking pellets and fish food. Unlike mystery snails, they will eat healthy aquarium plants — expect to choose between apple snails and a planted tank.
Apple snail tank mates
Peaceful, medium-to-large fish are fine. Avoid loaches, pufferfish and crayfish — all are professional snail predators. Keep them away from other snail species if you want those snails to survive.
Beginner mistakes to avoid
- Handling them bare-handed — rat lungworm carriage makes hand-washing non-negotiable.
- Expecting them to coexist with a heavily planted tank; they will prune it for you.
- Buying a "baby" apple snail without knowing the species — giant species outgrow small tanks in months.
- No lid: they climb out to lay eggs and are strong escape artists.