Will Ramshorn Snails eat my live aquarium plants?

Generally, no. Ramshorn Snails prefer to eat decaying organic matter, biofilm, and algae. They will usually only consume plant leaves that are already dying or melting. Healthy, growing aquatic plants are safe.

How do I stop my Ramshorn Snail population from exploding?

Snail populations are directly tied to the availability of food. To control their numbers, ensure you are not overfeeding your fish and perform regular gravel vacuuming to remove detritus. You can also manually remove snails during water changes.

Why is my Ramshorn Snail's shell turning white and pitting?

White, fragile, or pitted shells indicate that the water is too acidic or lacks sufficient calcium. Ensure your pH is above 7.0 and consider adding a calcium supplement or a piece of cuttlebone to the tank to support healthy shell growth.

Can Ramshorn Snails reproduce if I only have one?

Yes. Because they can store sperm from previous matings for several months, a single newly purchased snail can easily start a colony by laying multiple fertilised egg clutches in your tank.

Do Ramshorn Snails need a heater?

They are highly adaptable and can tolerate a wide range of temperatures (15-28°C). While they do not strictly require a heater in most indoor environments, they will be more active and breed faster in tropical, heated water.

FreshwaterTropicalBeginner

Ramshorn Snail

Planorbella duryi

A hardy, peaceful freshwater snail popular for its algae-eating abilities and striking flat-coiled shell.

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Ideal Conditions

Temperature: 15 – 28 °C
pH range: 7 – 8.5
Hardness: 8 – 15 dGH
Adult size: 1.5 – 2 cm
Nano tank: 10 litres+
Lifespan: 1 – 2 years
Diet: Omnivore / Detritivore
Water flow: Low to moderate

About the Ramshorn Snail

Ramshorn Snails are ubiquitous in the aquarium hobby, prized for their tireless cleaning habits and distinctive, flat-coiled shells resembling a ram's horn. While often introduced accidentally on live plants, many aquarists actively culture them as a highly effective clean-up crew for nano tanks and planted setups. Through selective breeding, they are now available in several attractive colour morphs, including red, pink, blue, and spotted varieties.

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Is it right for your tank?

Check Ramshorn Snail against a habitat you already keep. We compare water type, temperature, pH, adult size, group needs and everything living there.

Where Ramshorn Snail comes from

Native range

North America

Countries / regions

United States

Habitat

Swamps, marshes, ponds, and slow-moving streams with abundant aquatic vegetation and decaying organic matter.

Originally native to Florida, but now found globally as an introduced species in both the wild and the aquarium trade.

Similar species

Great Ramshorn Snail
Planorbarius corneus
Bladder Snail
Physella acuta
Malaysian Trumpet Snail
Melanoides tuberculata
Mystery Snail
Pomacea bridgesii

We’re adding more full species guides as the catalogue grows.

Compatible tank mates

Reviewed guidance based on this species' recorded traits.

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Cherry Shrimp
Neocaridina davidi
Completely peaceful companions that share similar grazing habits and water parameter requirements.
Great
Corydoras
Corydoras spp.
Peaceful bottom dwellers that will ignore the snails entirely.
Great
Otocinclus
Otocinclus spp.
Gentle algae eaters that coexist perfectly with detritivore snails.
Great
Betta Fish
Betta splendens
Some highly aggressive Bettas may peck at the snail's exposed antennae, causing them to remain stressed and hidden.
Compatible with caution
Assassin Snail
Clea helena
Assassin snails are specialist predators that will actively hunt and consume Ramshorn snails.
Not recommended
Clown Loach
Chromobotia macracanthus
Loaches are highly evolved snail predators and will quickly decimate the Ramshorn population.
Not recommended

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