Clithon sp. Thorn Snail 0.5-1 cm | Live Nerite

Overview

Clithon sp. Thorn is a small, attractive nerite-type snail prized by aquarists for its excellent algae-grazing habits and compact adult size. Sold here at approximately 0.5-1 cm, these juveniles are ideal for established freshwater aquariums where they can grow into useful, peaceful clean-up crew members. Their shell shape and subtle thorn-like projections give them a distinctive look, making them a favourite in planted tanks, nano aquariums and community setups.

These snails are best kept in mature aquariums with stable water conditions and plenty of natural grazing surfaces. They do not breed in freshwater, so they are a practical choice for aquarists who want algae control without the risk of a population explosion. With fast UK delivery and our live arrival guarantee, your new snails can arrive safely and settle in quickly.

Clithon species are generally hardy once acclimated, but they do need mineral-rich water to maintain healthy shell growth. Like other nerites, they are peaceful, non-destructive and highly useful in planted aquariums. They spend much of their time on glass, décor, wood and plant leaves, picking at biofilm and soft algae.

Care at a Glance

Origin & Natural Habitat

Clithon species are native to parts of Southeast Asia, where they are found in rivers, streams, estuaries and brackish-influenced freshwater habitats. In nature, they live on hard surfaces such as rocks, driftwood and submerged vegetation, grazing on the thin layer of algae and biofilm that develops in well-lit, nutrient-rich waters.

Because many nerite relatives come from mineral-rich environments, they are adapted to harder water and can struggle in very soft, acidic conditions over time. This is why stable, well-buffered water is important for long-term shell health. Their natural habitat also explains their preference for mature aquariums with plenty of surfaces to explore and feed from.

Tank Setup & Water Parameters

A well-established aquarium is the best home for Clithon sp. Thorn. Aim for a tank of at least 20 litres, though larger aquariums are always easier to keep stable. These snails are small, but they need a tank that has already developed biofilm and algae. Newly set-up tanks often do not provide enough natural food.

Provide a secure lid if your tank has gaps, as snails can occasionally wander above the waterline. Smooth rocks, driftwood, planted areas and glass surfaces all give them places to graze. Gentle filtration is suitable, and good oxygenation helps maintain excellent water quality. Avoid copper-based treatments, as snails are highly sensitive to copper.

For best results, keep the water within 19-26°C and the pH between 6.8 and 8.5. A hardness of around 10-31 dGH is ideal, as calcium and minerals support shell growth and reduce erosion. If your water is soft, consider remineralising it or providing a calcium source such as cuttlebone or a snail-safe mineral supplement.

Stable water quality matters more than chasing exact numbers. Keep ammonia and nitrite at zero, and maintain low nitrate through regular water changes. When introducing new snails, acclimate them slowly to avoid shock, especially if there is a significant difference in pH or hardness.

Feeding Guide

Clithon sp. Thorn is primarily an algae grazer and biofilm feeder. In a healthy aquarium, it will spend much of its time browsing surfaces for soft algae, diatoms and microscopic organic matter. This makes it an excellent helper in planted tanks and mature community aquariums.

Although they are efficient grazers, they should not be expected to survive on algae alone in a very clean tank. Supplement their diet with sinking algae wafers, spirulina-based foods, blanched courgette, spinach or cucumber, and other snail-safe vegetable matter. Remove uneaten fresh foods after a few hours to protect water quality.

Like all snails, they benefit from a calcium-rich diet to support shell development. A healthy shell should appear smooth and intact, without pitting or thinning. If shell wear is visible, review water hardness and diet first.

Tank Mates / Compatibility

Thorn nerite snails are peaceful and suitable for many community aquariums. They do best with calm fish and invertebrates that will not nip at their antennae or shell. Small tetras, rasboras, peaceful livebearers, Corydoras, Otocinclus and dwarf shrimp are often good companions in appropriately sized tanks.

Avoid housing them with snail-eating fish such as puffers, loaches, large cichlids and many aggressive barbs. Crayfish and some larger predatory fish may also harass or injure them. While they are tough enough to handle normal tank life, they are not able to defend themselves against persistent nipping or shell attacks.

Because they do not reproduce in freshwater, they are especially useful in community aquariums where you want the benefits of a clean-up crew without extra offspring. Their small size also makes them suitable for nano tanks, provided the aquarium is mature and water parameters are stable.

Why Buy from Tropical Fish Co

At Tropical Fish Co, we understand that live aquatic animals need careful handling from our tanks to yours. That is why we pack and dispatch with attention to temperature, oxygen and transit safety, helping your snails arrive in great condition. We also offer fast UK delivery and a live arrival guarantee for extra peace of mind.

Our Clithon sp. Thorn snails are selected for health and quality, so you can add a useful, attractive algae grazer to your aquarium with confidence. Whether you are stocking a planted nano tank or adding a hardworking clean-up crew to a larger community setup, these little snails are a practical and appealing choice.

Choose Tropical Fish Co for healthy livestock, reliable service and expert support for your aquarium journey.