Quick Stats
| Adult Size | 2–3 cm |
| Minimum Tank | 5 gal |
| Temperature | 18–30°C |
| pH Range | 7.0–8.0 |
| Hardness (GH) | 8–18 dGH |
| Difficulty | Easy |
| Temperament | Peaceful |
| Diet | Detritivore — detritus, leftover food, biofilm, algae, substrate waste |
| Schooling | Colony — reproduces freely |
Tank Setup
Malaysian Trumpet Snails (MTS) are the single most adaptable snail in the hobby. They tolerate temperatures from 18 to 30°C, pH from 7.0 to 8.0, and almost any hardness above 8 dGH. A 5 gallon tank is plenty for a colony; they don't need swimming space — they need substrate.
The non-negotiable is calcium. Their cones are made of calcium carbonate and they need harder water (8+ dGH) or a calcium source (cuttlebone, crushed coral in the filter) to maintain their shells. In soft acidic water the shells erode and the colony collapses within months.
Sandy substrate is where they shine. They burrow vertically through the sand during the day, coming out at night to forage. This constant burrowing prevents anaerobic pockets (the 'gas bubble' problem in deep sand beds) and keeps the substrate oxygenated. They are essentially a living sand-stirrer.
Tank Mates
MTS are peaceful and completely ignored by most fish. They are too small and too well-armoured to be eaten by anything short of a dedicated snail-eater (loaches, pufferfish).
Compatible with: every peaceful community fish, all shrimp species, all other snail species. The only tank mates that pose a risk are snail-eating specialists: Clown Loaches, Yoyo Loaches, Dwarf Puffers, and some cichlids.
They do not compete with other bottom-dwellers. Corydoras, plecos, and loaches ignore them. They coexist perfectly with Nerite snails (different niches — Nerite cleans glass, MTS cleans substrate).
Diet & Feeding
MTS are detritivores — they eat what's already in the substrate. Leftover fish food, dead plant matter, fish waste, biofilm, and soft algae are all on the menu. They do not eat live plants.
You do not need to feed them directly. Whatever your fish miss, the MTS will find. If you want to boost the colony, drop an algae wafer after lights-out; you'll see dozens of tiny cones emerge from the sand within an hour.
They are the only common aquarium snail that genuinely cleans the substrate rather than just the glass. The combination of MTS (substrate) + Nerite (glass and hardscape) + Amano shrimp (hair algae) covers every algae surface in the tank.
Common Health Issues
MTS are essentially indestructible in hard water. The main health issues are shell erosion (soft acidic water — fix with crushed coral or cuttlebone) and population crashes after copper medication (copper is lethal to all snails — remove them before treating fish).
They can survive out of water for days — they seal their shell opening with a thin operculum. This is how they spread between tanks on plants and equipment. Always dip new plants in potassium permanganate or bleach solution if you don't want MTS in a new tank.
Lifespan is typically 1–2 years. They reproduce parthenogenetically (females clone themselves without a male), so a single snail can start a colony. The population self-regulates based on food — overfeed and you'll have hundreds, starve them and the colony shrinks.
Breeding
MTS do not need a partner — females reproduce parthenogenetically, giving birth to live miniature adults (no egg stage). A single snail introduced to a tank will, within months, become a colony of dozens.
Population control is the actual challenge, not breeding. The colony expands to match available food. If you have hundreds, you are overfeeding — cut back on fish food and the population will self-correct within weeks.
To remove excess snails: bait with an algae wafer in a shallow dish overnight, then remove the dish (with snails) in the morning. Repeat nightly for a week. Assassin snails (Clea helena) will also hunt MTS if you want a biological control.
Frequently Asked Questions
Are Malaysian Trumpet Snails pests?
They reproduce freely, but they're not pests in a balanced tank. The population self-regulates based on food — if you have hundreds, you're overfeeding. Cut back on fish food and the colony shrinks naturally.
Do Malaysian Trumpet Snails eat plants?
No — they eat detritus, leftover food, and biofilm, not live plants. They are safe in any planted tank. They actually help plants by aerating the substrate and breaking down waste.
How do Malaysian Trumpet Snails reproduce?
Females reproduce parthenogenetically (no male needed), giving birth to live miniature adults. A single snail can start a colony. There is no egg stage — they appear fully formed at 2–3 mm.
Do Malaysian Trumpet Snails need a lid?
No — they live in the substrate and don't climb out of the tank. They can survive out of water for days if they do escape (sealed inside their shell), but they have no interest in leaving the water.