How to Get Rid of Malaysian Trumpet Snails (6 Methods That Work)

You notice the glass covered in cone-shaped snails. You spot them on the substrate, on the plants, on the hardscape. You count a dozen, then stop counting.

If you have an MTS infestation, you are not alone. I recently visited a freshwater aquarium at a local museum, and it was eye-opening. They had Malaysian trumpet snails crawling around on the glass in broad daylight. The staff told me they had no idea where the snails came from originally, which is more common than you think.

The problem is that Melanoides tuberculata, the scientific name for Malaysian trumpet snails, burrows into the substrate, reproduces without needing a mate, and can go from a handful to hundreds before you ever notice. The good news is that you almost never need to tear the tank down.

This guide covers six methods for getting rid of Malaysian trumpet snails, ranked from easiest and safest to most aggressive.

If you landed here before figuring out exactly what you have, take a detour first. Our Malaysian Trumpet Snail Care Guide covers identification, behavior, and whether what you are seeing is a problem.

The Best Methods for MTS Control, Ranked

Before diving in, here is a quick reference. Use it to decide where to start based on your setup and how serious the situation is.

Why MTS Populations Explode (and What That Means for Control)

An MTS infestation is almost never random. Malaysian trumpet snails feed on microalgae, detritus, and leftover fish food, so their numbers track directly with how much excess organic matter is sitting in your tank.

What makes them so hard to control is how they reproduce. MTS are livebearing snails, which means they do not lay visible egg clusters you can spot and scrape off. Many populations reproduce parthenogenetically, meaning females produce young without fertilization. One snail is enough to start a colony. Newborns emerge from a brood pouch measuring just 1.2 to 2.2 mm at birth, so they vanish straight into the substrate.

The snails you see on the glass are only part of the story. The rest are buried. If your Malaysian trumpet snails are multiplying fast, the tank is feeding them somehow, and fixing that is where you need to start.

The Best Overall Strategy for MTS Control

Method 1: Reduce Feeding (Easiest, Most Overlooked)

This is the step most people skip, and the one that matters most.

Snails can only sustain large numbers when there is enough food to support them. Cut the food supply, and you cut the reproduction rate. It will not make existing snails disappear overnight, but it stops the population boom and makes every other method more effective.

The principle is to feed only what your fish can finish in two to three minutes, and remove anything left over before it hits the substrate. MTS thrive on the food your fish do not eat, especially sinking wafers, algae pellets, and bottom-feeder tablets, which settle directly into the gravel where the snails live. If you use those regularly, cut back first and see what happens.

Beyond feeding, keep the tank clean. Prune dying plant leaves before they break down into mulm, the dark, dusty debris that collects on the substrate and feeds snail populations just as effectively as leftover fish food. Vacuum it out at every water change, and keep algae under control without stripping the tank too aggressively.

Think of this as cutting off the supply chain. Without excess food, the population stops growing. That is the foundation every other method builds on.

Method 2: Manual Removal and Handpicking

Manual removal is low-tech, zero-risk, and genuinely effective for small to medium infestations. Pick snails off the glass, net them, or siphon them out during water changes.

It is also what they told me they do at the freshwater aquarium I visited. They just hand-pick whenever numbers creep up, without using chemicals or introducing predators. For a managed tank, it holds the population in check.

The challenge with MTS is that they spend a lot of time buried in the substrate, but they do surface whenever food is available, which is why an aquarium that is regularly fed will show visible snails on the glass even during the day.

Trapping at night works well because activity tends to peak after lights out, but do not wait for darkness to start handpicking. If you can see them, remove them.

When you do go in, use long tweezers rather than your fingers in planted tanks. You will reach further without uprooting plants.

During water changes, work the siphon just above the gravel surface and target any visible snails directly rather than doing a general sweep. If the infestation is severe, deep-clean one section of the substrate at a time rather than the whole thing at once. Disturbing too much substrate in one go can release trapped waste and put stress on your biological filtration.

Pair this with feeding reduction, and you will start to see numbers shift within a few weeks.

Method 3: Trapping MTS at Night

Trapping is one of the best natural ways to remove Malaysian trumpet snails without risking the rest of the tank. Because MTS are active after lights out, they surface looking for food, and you can use that against them.

For bait, blanched zucchini or cucumber holds together well overnight and draws snails reliably. Lettuce and spinach work too, though they break down faster. A sinking algae wafer or pellet placed in a small glass dish also works, and commercial snail traps follow the same principle. Set them on the substrate loaded with food, and collect in the morning.

One important warning: do not leave vegetable bait in too long. Rotting food makes water quality worse and feeds the next snail cycle instead of reducing it. Remove it before lights come on if you can.

One trap night removes some snails. A week of consistent trap nights starts to shift the population.

For a purpose-built option, our Best Snail Traps for Freshwater Aquariums guide covers the most effective ones available.

Method 4: Vacuum the Substrate

Skimming the gravel surface during water changes misses most of the MTS because they live and breed underneath it. Deep gravel vacuuming physically removes snails, eggs, mulm, and the food debris sustaining them all at once.

Vacuum at every water change rather than just occasionally, and push the siphon into the top layer of the substrate rather than hovering above it. Focus on the spots where food collects most: around plant bases, under decorations, and near filter output zones. In an established tank, clean one section at a time to protect the beneficial bacteria living in the substrate.

In extreme cases, some hobbyists replace the substrate entirely. Treat that as an aggressive final step. Full substrate removal can crash your biological filtration and release a surge of trapped waste. If you go that route, move livestock to a holding tank first.

Gravel vacuuming works best when combined with feeding reduction. Together, they remove both the snails and the food supply keeping them there.

Method 5: Biological Control and What Eats MTS

Adding a predator can work, but only when it fits your tank long-term. Every option below has its own temperament, tank size needs, and feeding requirements that matter well after the snail problem is gone.

Assassin Snails (Clea helena)

Assassin snails are carnivorous snails that actively hunt and consume other snails, including MTS. In the assassin snail vs MTS matchup, they apply slow, steady pressure over weeks rather than delivering quick results. They are not a magic eraser for a tank with hundreds of buried snails, but they are one of the safer biological options because they do not require a large tank, do not harm fish, and work quietly in the background of most community setups.

The main thing to understand is that assassin snails are a control method, not an extermination method. They work best when you are already reducing feeding and doing manual removal, not instead of those steps. They are also not hermaphrodites, so a single assassin snail will not reproduce on its own. But if you add a group and both sexes are present, they can breed, though far more slowly than any pest snail.

The downside that catches people off guard is that assassin snails will eat any snail they can catch, not just MTS. If you keep nerites, mystery snails, or other ornamental species, they are at risk. And once the MTS population drops, the assassin snails still need to eat, so you will need to feed them or plan for what happens when their primary food source runs low.

Thinking about adding assassin snails to your tank? Our Assassin Snail Care Guide covers everything you need to set them up properly.

Loaches

Several loach species are effective fish that eat MTS. Yoyo loaches, zebra loaches, dwarf chain loaches, and clown loaches can use their pointed snouts to probe the substrate and pull out buried snails, which makes them genuinely well-suited to an MTS problem in a way that most fish are not.

That said, the loach most commonly recommended online, the clown loach, is also the one most likely to cause problems if you are not prepared for it. Clown loaches can reach 12 inches and live 10 to 25 years. Buying one to solve a snail problem is like buying a dog to deal with a mouse. Yoyo loaches are a more practical choice for medium to large tanks, and dwarf chain loaches work for smaller setups, though both still need to be kept in groups and given proper long-term care.

Kuhli loaches come up often in online discussions about snail control, but they are not the strongest hunters compared to the yoyo, zebra, or dwarf chain options. Worth knowing if you already keep them, but not worth buying specifically for MTS.

The rule is straightforward: do not buy a loach unless you genuinely want to keep that species. Snail control is a side effect, not a justification for ignoring adult size, social needs, or tank requirements.

Pea Puffers

Pea puffers come up constantly when people ask what eats MTS, and for good reason. They are enthusiastic snail hunters, and crunching through snail shells helps wear down their teeth naturally.

That said, they are not beginner cleanup fish. Pea puffers often refuse dry food and may need live options like brine shrimp, daphnia, or blackworms before they transition to frozen alternatives.

They can also be nippy and aggressive in community tanks, and they generally do best in a species-specific setup. A pea puffer might solve your snail problem, but it is a fish with long-term care needs, not a snail-removal gadget.

A Note on Goldfish

Goldfish will sometimes eat small snails, but they are a poor fit for most tropical community tanks. Their temperature requirements, heavy waste output, and tank size needs make them a bad general-purpose answer to an MTS problem. They are worth mentioning only if you already have a cold-water setup or a pond.

Biological control at a glance:

Method 6: Chemical Removal (Last Resort Only)

Copper can kill snails, but it can also create a bigger problem than the one it solves. In a stocked tank, dead snails, stressed fish, damaged biofiltration, and copper-sensitive invertebrates can turn a snail problem into a water-quality emergency. A mass snail die-off alone can overload filtration and cause ammonia and nitrite spikes.

If you do go this route, remove all fish, shrimp, and invertebrates before treating. Never use copper in a shrimp tank since residue lingers even after large water changes. Follow the product label exactly, do not guess or improvise the dose, and test water parameters throughout treatment. Remove dead snails immediately to prevent ammonia spikes, and do multiple large water changes before reintroducing any livestock.

Fenbendazole, a dog dewormer occasionally used in planted tank communities, is sometimes mentioned as an alternative. Treat it with the same caution level and research it thoroughly before use.

Chemicals are the final option. Start with feeding control, trapping, and manual removal. Most MTS infestations respond to those methods well before you ever need to consider this step.

Copper is not forgiving in a freshwater system. Before you go that route, our guide on copper safety in aquariums walks through the risks, the dosing, and what you can and cannot reverse.

How to Dispose of Malaysian Trumpet Snails Humanely

Once you have caught or removed snails, you have a few responsible options. Give them to hobbyists who keep pea puffers, assassin snails, loaches, or turtles. Use them as live feeder snails if you already keep snail-eating animals. If you are euthanizing, crushing is the quickest method and the one most commonly recommended in the hobby. For dead snails, bag them in a sealed bag and place them in the trash.

What you should never do is release Malaysian trumpet snails into ponds, streams, drains, or outdoor water features. Melanoides tuberculata is already established in multiple U.S. states, and aquarium releases are one of the documented pathways by which non-native aquatic species spread. Once they are in a local waterway, they cannot be taken back.

How to Prevent MTS From Coming Back

Even careful hobbyists introduce pest snails. Malaysian trumpet snails hitchhike in on live plants, slip in through store bag water, and turn up on secondhand hardscape and substrate. They are small enough that you can miss them easily, and the aquarium staff I visited had no idea how theirs first got in.

Inspect all live plants closely before adding them to your tank, and quarantine new plants for two to four weeks in a separate bare tank when you can. Rinse plants thoroughly before introducing them. Do not pour store bag water into your aquarium. Acclimate using the drip method or a separate container instead. Check used hardscape, substrate, or equipment before adding anything to an established setup.

A small MTS population is not always a problem. These snails aerate the substrate and clean up detritus, and a handful of them in a healthy tank is genuinely useful. The goal is control, not necessarily total elimination. Keep feeding under control and one hitchhiker snail never becomes hundreds.

You Can Beat This Without Going Nuclear

You do not need a nuclear option to deal with an MTS infestation. For most hobbyists, combining reduced feeding with consistent trapping and gravel vacuuming brings numbers under control within four to eight weeks, no chemicals required.

Add biological control only if the predator fits your tank and you are genuinely prepared to care for it long-term. Reach for copper only when everything else has failed, and only after removing your sensitive livestock first.

Start simple. Stay consistent. The population will respond.