Batik Nerite Snail (Neritina sp.)

Understand the identity and offer

Batik Nerite Snail is the trade name for this patterned freshwater aquarium snail. The World Register of Marine Species places Neritina as an accepted genus in the nerite family Neritidae. The scientific label therefore remains Neritina sp.: “sp.” means the animal is identified to genus rather than to one named species. It suits a keeper with a mature, filtered aquarium who can test the water, maintain stable conditions and exclude fish that eat snails.

Prepare a mature, filtered aquarium within the stated water boundaries and with enough space for its full population.

As natural-history context, the genus summary for Neritina describes small aquatic gastropod molluscs with an operculum. Members of the genus occur in marine, brackish and sometimes freshwater environments. Keep this Batik form in a freshwater aquarium.

What one purchase means

• Purchase unit: one purchase supplies one live snail.
• Dispatch grade: 1 cm. This is the size used for dispatch, not a promised adult measurement.
• Scientific identity: Neritina sp., with no species name attached.

Plan around water, space and adult scale

OATA’s freshwater shrimp and snail sheet gives 17–27°C, pH 6.5–8.0, general hardness of 4–18°dH and carbonate hardness of 3–15°dKH as group guidance. Treat these as aquarium boundaries rather than a narrow target centred on one unidentified species. Keep ammonia and nitrite at zero, and keep nitrate from exceeding 20 mg per litre above the normal level in your tap water.

For a group of small freshwater shrimp or snails, OATA recommends an aquarium of at least 10 litres. Use that figure as a floor for the small-invertebrate setup it describes, not as a promise that every aquarium above 10 litres is suitable. Choose a larger aquarium when fish are included, and assess the complete population rather than the snail in isolation. More water also makes environmental conditions such as temperature and water quality more stable.

For adult-scale planning, freshwater aquarium snails in the same guidance are described as unlikely to grow larger than 5 cm. That is a ceiling for the wider aquarium-snail group, not a promised final size for this animal. Do not use the 1 cm dispatch grade as its adult measurement. Leave enough room for an aquarium snail approaching the wider 5 cm planning figure while judging the live animal by its development over time.

Check whether the aquarium suits this snail

Understand the offer

The exact species has not been identified, so the care advice here follows the genus Neritina and its care group.

Sex is guaranteed only when the selected option explicitly states male or female. This Batik Nerite Snail listing has no sex-guaranteed option.

The gallery images are representative of this type of animal rather than photographs of the exact animal supplied, so colours can look slightly different from the live animal. The gallery image shows one snail with a domed yellow-gold shell, irregular black markings, a dark speckled body and extended tentacles moving over gravel among wood and green plants.

Mature the aquarium before arrival

Prepare and mature the aquarium before the snail arrives. A filter must already be operating, and tests must show zero ammonia and zero nitrite. Adding an animal before the biological filter can process the extra waste risks new tank syndrome, in which ammonia or nitrite rises to unhealthy levels.

The RSPCA’s aquarium filtration guidance explains why a working biological filter matters: livestock waste produces toxic ammonia, beneficial bacteria convert it to toxic nitrite, and another stage converts nitrite to the safer nitrate. A filter is therefore part of the animal’s life-support system rather than an optional way to keep the water looking clear.

Complete these checks first

1. Run the filter to maturity. Do not treat a newly filled aquarium as ready simply because the water looks clear.
2. Test the water. Ammonia and nitrite must both read 0 mg per litre before the snail is introduced.
3. Check the aquarium volume. Use at least 10 litres for the small-snail setting described by OATA and go larger when fish share the system.
4. Add the basic environment. Use aquarium gravel or sand and include live plants where practical. Plastic plants and suitable aquarium ornaments can be used where live plants are not chosen.
5. Review every treatment. Confirm that anything previously added to the aquarium is safe for freshwater invertebrates.

If this is your first invertebrate aquarium, the shop’s guide to preparing and maturing an aquarium provides a useful setup sequence before livestock is introduced. Apply the same core decisions here: establish filtration, measure the water and avoid adding several animals at once.

A larger aquarium gives more room for water conditions to remain steady, but volume does not replace preparation. A large tank with an immature filter can still develop ammonia or nitrite, while a carefully matured smaller system still needs weekly testing. Readiness is demonstrated by the filter, water results, maintenance routine and planned inhabitants working together.

Keep water inside the working boundaries

Measure temperature, pH, general hardness and carbonate hardness rather than judging water by appearance. Clear water can still sit outside the working boundaries, and ammonia or nitrite cannot be ruled out by looking at the aquarium. Establish the normal readings for both the tank and replacement tap water so that weekly results have a meaningful comparison.

Use the shop’s aquarium water chemistry guide to identify which values your test kit measures and why each result belongs in the routine. Once you have current readings, the water matcher can help compare them with the 17–27°C, pH 6.5–8.0, 4–18°dH and 3–15°dKH boundaries used here.

Work from measured water

Write down the aquarium result, the tap-water result and the date. For nitrate, compare the aquarium directly with the normal tap-water baseline because the limit is expressed as no more than 20 mg per litre above that level. For ammonia and nitrite, the acceptable result remains zero regardless of the aquarium’s age.

Do not rush to add livestock after one convenient reading. Test again as part of the normal weekly routine and after changes that affect feeding or animal numbers. Stable results within the working boundaries provide a better basis for introduction than selecting a single middle value and overlooking the rest of the aquarium.

Protect the filter during weekly maintenance

Carry out a 25% partial water change at least once a week. Treat replacement tap water with a conditioner that removes harmful chlorine or chloramine before it enters the aquarium. A siphon can remove solid waste from the gravel during the same maintenance session.

Test the water at least weekly, with ammonia and nitrite remaining at zero. Record nitrate against the tap-water result so you can see whether the aquarium has approached the limit of 20 mg per litre above its normal baseline. Regular results make a developing problem easier to spot than a single test taken after behaviour changes.

Use this weekly sequence

1. Test ammonia, nitrite and nitrate before disturbing the aquarium.
2. Set aside enough conditioned replacement water for a 25% change.
3. Siphon solid waste while removing the old aquarium water.
4. Check the filter for blockages or reduced flow.
5. If cleaning is needed, rinse the reusable filter media lightly in the removed aquarium water.
6. Return the media and restore normal filter operation.
7. Add the conditioned replacement water and confirm the system is running correctly.

Never rinse established filter media under the tap. Chlorine or chloramine may kill part of the beneficial bacterial population living in it. Using removed aquarium water reduces the number of bacteria lost while still allowing loose debris to be cleared.

Stocking and feeding affect how much work the filter must perform. Add snails or other livestock slowly because the beneficial bacterial population needs to increase as waste and feeding increase. Adding several animals together can outpace that adjustment even when the aquarium was previously mature.

Feed the grazer without polluting the water

Freshwater snails generally graze algae in the aquarium, but visible algae alone is not a complete feeding plan. Supplement that grazing with an algae wafer so the animal receives food when the aquarium does not produce enough suitable growth. Commercial pellets made for freshwater shrimp can also be used for both shrimp and snails.

Offer supplementary food two or three times a week. Leave a pellet or wafer for at least 30 minutes so the snail has time to reach and eat it. After that feeding opportunity, remove uneaten material rather than allowing it to break down in the aquarium.

Build the portion from observation

1. Choose an algae wafer or commercial pellet intended for freshwater invertebrates.
2. Offer a modest amount in a place the snail can reach.
3. Allow at least 30 minutes for feeding.
4. Check whether the food has been eaten or actively grazed.
5. Remove the uneaten remainder before it becomes decaying waste.
6. Repeat the routine two or three times that week, adjusting the amount to observed consumption.

Overfeeding creates a second problem instead of solving a food shortage. Uneaten food breaks down and releases waste into the water, increasing the burden on filtration and potentially contributing to toxic conditions. A large portion is not safer simply because the snail can continue grazing after the keeper leaves.

Keep feeding decisions tied to both consumption and water quality. The aim is to make food accessible without leaving excess material to decay. Weekly ammonia, nitrite and nitrate results will show whether feeding and filtration remain balanced as the aquarium population changes.

Add livestock slowly and plan solitary keeping

Snails are not social animals, so this animal can be kept singly. Do not buy several simply to create a social group. If more snails are planned for a practical or visual reason, assess aquarium size, filtration and food for the total number and add them gradually.

OATA recommends at least 10 litres for a group of small freshwater shrimp or snails and a larger aquarium when fish are included. That recommendation describes the system as a whole. It does not create a fixed number of snails per 10 litres, so avoid calculating a stocking rate from volume alone.

Use staged stocking

1. Confirm zero ammonia and nitrite before the first addition.
2. Add only the planned animal rather than several unrelated livestock purchases together.
3. Keep feeding modest while the filter’s bacterial population adjusts to the extra waste.
4. Test at least weekly and observe activity, appearance and food intake.
5. Delay any further addition if ammonia or nitrite appears or nitrate rises too quickly against the tap-water baseline.

New tank syndrome occurs when there are too few nitrifying bacteria to process the waste created by added livestock and feeding. Ammonia and nitrite can then reach unhealthy levels and may cause freshwater snails to become ill or die. A previously mature aquarium can still be challenged if stocking increases too quickly.

Solitary keeping simplifies the stocking decision but does not remove the need for suitable water, food or maintenance. One snail still depends on a working filter, conditioned replacement water, safe treatments and an aquarium large enough for all inhabitants sharing it.

Protect the snail from copper and health changes

Freshwater snails are invertebrates and are very sensitive to copper. They will die if exposed even to low levels, so every treatment added to the aquarium must be labelled safe for the invertebrates present. Check medications before dosing rather than assuming that a product intended for aquarium fish is also suitable for a snail.

Check before adding any treatment

• Read the product label and active-use warnings.
• Confirm that the product is explicitly safe for freshwater invertebrates.
• Follow the stated dose rather than estimating from the aquarium’s appearance.
• Do not expose the snail to a copper treatment.
• Continue water testing because medication does not replace good husbandry.

Observation helps identify a developing problem early. Look for changes in normal activity, unusually prolonged inactivity or restlessness, a darker or paler appearance, more hiding than normal, lesions, discolouration, abnormal growths, swelling, damage or reduced interest in food. Judge changes against the animal’s normal pattern rather than reacting to one brief pause.

Test before reaching for medication because poor water quality and chemical exposure can both coincide with altered behaviour. Keep ammonia and nitrite at zero, maintain the weekly 25% water-change routine and remove uneaten food so the environment is addressed alongside the visible sign.

If a change persists, the animal stops feeding or its appearance deteriorates, contact us promptly with the aquarium volume, current test results, temperature, recent additions and treatment history. Those details allow the health change to be assessed without exposing a sensitive invertebrate to an unsuitable product.

Follow the store acclimatisation steps

Prepare the receiving aquarium before the parcel arrives. Someone must be home to receive a live-animal delivery, and the mature filter should already be running. Test ammonia and nitrite, confirm the temperature sits within 17–27°C and make sure any recent treatment was safe for freshwater invertebrates.

Use the shop’s current delivery and Live Arrival Guarantee policy for the arrival procedure and claim requirements. Film every delivery continuously from the sealed parcel as it is opened, keeping the animal inside the sealed bag visible before anything is disturbed.

Acclimatise in this order

1. Have someone present to receive the parcel.
2. Start filming while the parcel is still sealed, with the outer box visible.
3. Open the parcel in one continuous take and show the animal while it remains inside the sealed bag.
4. Open and inspect the parcel on the day it arrives.
5. Float the bag in the aquarium for 20–30 minutes before releasing the snail.
6. Never pour the transport-bag water into the aquarium.

The receiving aquarium must already meet the water-quality requirements because floating the bag does not mature a filter or remove ammonia and nitrite from the display.

During the first week, keep the normal feeding and testing routine simple. Avoid adding further livestock while you confirm that the filter continues to hold ammonia and nitrite at zero and that the snail is showing its normal activity and feeding response.

Screen out fish that eat snails

Freshwater snails can share aquariums with many other inhabitants, but they must be mixed with caution because common aquarium fish may eat them. Compatibility therefore begins with feeding behaviour: do not combine this snail with a fish that can eat it.

Avoid pufferfish and loaches. OATA names these as examples of fish that eat snails, so their predatory role rules them out even if temperature or pH appears to overlap. Apply the same rule to any other fish known to consume snails.

Ask these questions about every fish

• Is the fish known to eat snails?
• Could its normal feeding behaviour place the snail at risk?
• Can both animals live within 17–27°C and pH 6.5–8.0?
• Does the complete aquarium remain large enough once fish are included?
• Can the filter process the combined livestock and feeding load?
• Have all treatments used in the shared aquarium been safe for invertebrates?

A peaceful or community label by itself is not enough to decide. The useful question is whether the particular fish eats snails and whether both animals share suitable water. Where a species has not been assessed for this combination, treat the outcome as uncertain rather than turning a general temperament label into a guarantee.

For a stocking and compatibility assessment, contact us with the aquarium volume, temperature, pH, hardness readings and the scientific names of the other animals. That allows the predator screen and water overlap to be considered together.

Check the whole community before mixing

Compatibility is a whole-aquarium decision rather than a list of universally safe companions. Start with the snail-eating screen, then compare water requirements, aquarium volume, filtration, feeding and chemical history. A combination should pass every part of that check before the snail is introduced.

Use a five-part community check

1. Predation: exclude pufferfish, loaches and any other fish that eat snails.
2. Water: keep the shared aquarium within 17–27°C, pH 6.5–8.0, 4–18°dH and 3–15°dKH.
3. Space: use at least 10 litres for the small-invertebrate setting and choose more volume when fish are included.
4. Filtration: maintain zero ammonia and nitrite after every planned addition.
5. Chemical safety: use only treatments safe for freshwater invertebrates.

Snails are not social animals, so another snail is not required as a companion. Keeping one can be an appropriate choice where the aquarium meets its needs. If several are introduced, add them slowly and test the water while the biological filter adjusts to increased livestock and feeding.

Use the nerite snail collection to compare the identities and appearance of other nerite offers. Similar trade names or shell forms do not make two animals interchangeable, so return to the scientific label and care boundaries for each one.

The honest limit is individual behaviour. Even after a combination passes the general screen, watch feeding and activity after introduction. If another animal attempts to eat the snail, the combination has failed and the animals need separate suitable aquariums.

Answer common buyer questions

How big does the Batik Nerite Snail get?

The 1 cm figure is its dispatch grade, not its adult size. OATA’s freshwater shrimp and snail guidance says popular aquarium snails are unlikely to grow larger than 5 cm, so use 5 cm as a broad planning ceiling rather than a promised final size.

What size aquarium does it need?

OATA recommends an aquarium of at least 10 litres for a group of small freshwater shrimp or snails and says the aquarium must be larger when fish are included. Use a mature, filtered setup and assess the complete population.

How many Batik Nerite Snails should I keep?

One can be kept singly because OATA states that snails are not social animals. Add further snails only gradually, with enough space, food and filtration for the complete aquarium population.

Is this snail suitable for beginners?

It suits a keeper who can mature the filter before arrival, test ammonia and nitrite, complete weekly maintenance, provide supplementary food and prevent copper exposure. Do not use it as the first inhabitant of an immature aquarium.

What does the Batik Nerite Snail eat?

OATA’s group guidance says freshwater snails graze aquarium algae and should receive algae wafers or commercial freshwater-shrimp pellets two or three times a week. Leave the food for at least 30 minutes and remove uneaten material.

What temperature and pH does it need?

OATA’s freshwater shrimp and snail guidance gives 17–27°C and pH 6.5–8.0 for the group, with general hardness of 4–18°dH and carbonate hardness of 3–15°dKH. Keep ammonia and nitrite at 0 mg per litre.

Is the Batik Nerite Snail aggressive or likely to nip fins?

Treat it as an algae-grazing snail and plan compatibility around danger to the snail. OATA says snails are not social animals and warns that common aquarium fish may eat them.

Which animals can live with a Batik Nerite Snail?

Consider only animals that do not eat snails, share the stated water boundaries and fit the aquarium’s total livestock plan. Avoid pufferfish, loaches and any other fish known to eat snails.

How does it arrive alive in the UK?

Film every delivery continuously from the sealed parcel as it is opened, with the animal still visible inside the sealed bag. Someone must be present to receive it; float the bag for 20–30 minutes before release, and never pour the bag water into the aquarium.

Consult the care references

• World Register of Marine Species: Neritina — accepted genus and family placement.
• Neritina genus summary — operculum, aquatic identity and marine, brackish or freshwater occurrence across the genus.
• OATA: How to look after freshwater shrimp and snails — water, aquarium size, feeding, copper, maintenance, introduction and compatibility.
• RSPCA aquarium environment guidance — biological filtration and aquarium waste processing.