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Black Military Helmet Snail (Neritina pulligera)

Black Military Helmet Snail (Neritina pulligera)

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Description
Freshwater Snails

Black Military Helmet Snail

A smooth, glossy Nerite with a deep brown to near-black shell shaped like a soldier's helmet. One of the most effective algae grazers available, with a clean minimal appearance that works in any planted setup.

Smooth Glossy Helmet-Shaped Shell Deep Brown to Near-Black Cannot Breed in Freshwater Prefers Good Flow & Oxygenation Continuous Algae Grazer Shrimp Safe

Black Military Helmet Snails (Neritina pulligera), also known as the Black Racer Nerite or Dusky Nerite, are a widely distributed Indo-Pacific Nerite species native to fast-flowing freshwater streams and rivers with rocky substrates. The shell is smooth, low-profile, and deeply glossy in a dark brown to near-black colouration that gives it its common name. Unlike the patterned Nerites in the hobby -- zebra stripes, olive mottling, horns and spikes -- the Black Military Helmet reads as clean and minimal, letting the gloss and the distinctive rounded helmet profile do the visual work. The foot is kept mostly tucked inside the shell during movement, giving the snail a compact, streamlined appearance as it grazes. Highly effective at consuming algae films across glass, hardscape, and plant surfaces. Cannot breed in freshwater. Prefers well-oxygenated water with moderate flow. Safe with all shrimp and snail species. GH 6+ for shell health.

Shell Form & Colouration

Smooth, low-profile, deeply glossy shell in deep brown to near-black. The shell surface of the Black Military Helmet Snail is smooth and polished rather than ridged or textured, producing a gloss that catches light clearly and gives the shell a distinctly clean, almost lacquered appearance. The dark colouration ranges from a very deep warm brown in some individuals to near-black in the darkest specimens. Unlike the patterned Nerites commonly kept in the hobby, the Black Military Helmet's shell has no visible markings or banding, giving it a minimal, graphic quality that reads differently from other Nerite species in the same tank. Distinctive rounded helmet profile, lower and wider than conical Nerite species. The shell has a notably broad, rounded, low-domed shape that gives the snail its common name. It is wider relative to its height than many other Nerite species, sitting close to the substrate and hardscape as it grazes. Up to approximately 1 inch at maturity. Foot remains mostly inside the shell during movement. Black Military Helmet Snails keep the bulk of their foot retracted inside the shell aperture as they move, showing only the antennae and a narrow edge of the foot. This gives them a more compact, shell-dominant appearance than species like Mystery Snails where the foot and body are prominently visible during activity.

Grazing, Flow & Husbandry

Highly active and effective algae grazer across glass, hardscape, and plant surfaces. Black Military Helmet Snails graze continuously and cover significant tank surface area during both day and night. They are particularly effective at consuming the soft green film algae and brown diatom films that accumulate on glass and smooth hardscape. In the hobby they are regarded as one of the most active and thorough algae-eating Nerite species available. Prefers good water flow and high oxygenation. In the wild this species inhabits fast-flowing streams and rivers. In captivity it performs best and lives longest in tanks with adequate flow and oxygen. A sponge filter or HOB with a moderate output keeps the water oxygenated and produces the kind of gentle current this species appreciates. Stagnant, low-flow tanks are tolerated but result in reduced activity and a shorter lifespan over time. Cannot breed in freshwater, population is completely stable. Like all Nerite species, Black Military Helmet Snails require brackish water for larval development. White egg capsules may appear on hardscape, glass, and plant surfaces but will not hatch in freshwater. You will never have more than you introduce. Always place upright in the tank, never drop in. This is one of the most important practical care notes for this species. Neritina pulligera has difficulty righting itself if it lands upside down, and a snail left inverted on the substrate can die in that position. Use aquarium tweezers or your fingers to place each snail upright on a hard surface when introducing it to the tank. Do not drop them in and let them sink to the bottom at random. Cover the tank and keep water line low. Like all Nerites, Black Military Helmet Snails climb and will exit the water through any gap. Keep the water line at least 5 to 7cm below the rim or use a tight-fitting lid. GH 6+ and pH above 7.0 for long-term shell quality. Calcium availability directly affects the gloss and integrity of the shell. In soft or acidic water the shell surface becomes dull, pitted, or eroded over time. Maintain GH 6+ and supplement with cuttlebone in softer water. Standard Neocaridina parameters are fully adequate. Safe with all Neocaridina and Caridina shrimp. Supplement with algae wafers and blanched vegetables in new or low-algae tanks. In a well-established tank with consistent algae growth they require no supplemental feeding. In newer or cleaner tanks supplement with algae wafers, blanched zucchini, or spinach. This species can take time to accept prepared foods and may initially ignore wafers, so persistence and a variety of food placements is recommended while the snail adjusts.
Keeper's Note

The Black Military Helmet Snail is one of the most visually understated Nerites available, and in the right tank that restraint is exactly what makes it work. Against pale substrate or bright green planting the glossy near-black shell reads as a clean, deliberate contrast element without competing with the shrimp or plants for attention. A small group of three to five scattered across the foreground and glass of a shrimp tank provides genuine algae control and a subtle visual anchor that holds the composition together without drawing the eye away from the main display.

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Before placing your order, please review our DOA Policy Shipping Info
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Policies & Disclaimers
Before you order · Snails

Policies & Disclaimers

What to expect from your snails, how our guarantee works, and what to do when your order arrives.

Size & appearance

Snail size varies by species and individual. Refer to the listing and selected option for any stated purchase size. Adult or maximum sizes in care information describe growth potential, not a guaranteed size on arrival. Photos represent the species or color variety rather than the exact animals you will receive.

Shells, colors & markings

Shell shape, color, pattern and body coloration vary between individuals and with age. Lighting and aquarium conditions can affect how colors appear. Follow the mineral and water requirements in the species listing to support shell health. Photograph any concerning shell damage on arrival and report it promptly under the Live Arrival Guarantee.

Inactivity after shipping

Snails may remain withdrawn or inactive after shipping and can take several days to settle. Lack of movement alone does not confirm that a snail has died. Do not force a snail out of its shell. If you are concerned about its condition, photograph the unopened packaging and email us within two hours of the carrier’s recorded delivery time. Report the concern promptly even if the snail may simply be inactive; waiting several days does not extend the claim window.

Reproduction & eggs

Reproductive behavior differs by species. Some snails can reproduce readily in freshwater; others have different requirements for successful reproduction. Egg laying is not the same as successful hatching. Read the species listing before purchase rather than assuming all snails will, or will not, reproduce in your aquarium. We do not sex snails. No particular sex, male-to-female ratio or breeding pair is guaranteed.

Feeding & compatibility

Snails have different diets and habitat requirements. Do not assume every species eats algae or can live on algae alone. Assassin snails prey on other snails and are not suitable companions for a collection of ornamental snails. Use the care and compatibility information for the specific species, and check that tankmates will not injure or eat it.

Recognizing activity without forcing a response

A snail may stay retracted after shipping or become active when you are not watching. Some species have a shell door, called an operculum, while others do not; a closed shell or an unfamiliar resting position is not enough by itself to identify a loss.

Do not pull on the body, pry a shell door open or repeatedly handle a snail to make it move. If its condition concerns you, document the unopened bag and contact us within the two-hour window. The possibility of delayed activity does not change the policy’s deadline or turn an unconfirmed loss into an approved claim.

Shell appearance & damage documentation

Shell patterns, growth lines, surface texture and body colors vary with species and age. A photograph of one individual cannot show every pattern you might receive. Natural variation and a concern about physical damage are different questions.

Photograph cracks, chips, erosion or other areas that worry you, together with a wider view and the shipping label. Do not scrape, polish or alter the shell to improve the photo. Report concerning arrival damage promptly rather than assuming it must be accepted or automatically qualifies for a particular resolution.

For ongoing shell health, follow the species’ water and mineral requirements. Measure your water before adding supplements, and avoid treating all snail species as having identical needs.

Eggs, young & population expectations

We do not sex snails, and packs are not assembled to a male-to-female ratio. Snail reproductive biology varies: some species have separate sexes, while others have both reproductive functions. Do not interpret an unsexed pack as a promise that breeding cannot occur.

Ramshorn and bladder snail populations can grow in freshwater, particularly when food is plentiful. Nerites may leave eggs on hard surfaces even though successful development has different requirements from the adults’ freshwater habitat. Check the individual species rather than assuming every egg will hatch or that every snail reproduces in the same way.

A group is not a guaranteed breeding colony. The number and appearance of offspring, or the absence of eggs, cannot be predicted from representative product photos.

Feeding, predators & acclimation

Match the diet to the species. Grazing snails still need an adequate food supply, and an apparently clean aquarium may not provide enough natural grazing. Predatory species such as assassin snails have different feeding and compatibility needs from algae grazers.

Keep ornamental snails away from animals likely to bite their exposed bodies or damage their shells. Follow the specific species’ habitat and acclimation guidance, and check that any treatment used in the aquarium is appropriate for snails.

Quarantine or separate observation can help you inspect new arrivals and their behavior before adding them to an established aquarium. It is care guidance, not an extra claim requirement; follow the arrival documentation rules before transferring animals.

Bonus animals & your paid count

When inventory allows, our policy provides one bonus animal for every five ordered of the same species. Bonuses are discretionary and are not separately covered for refund or replacement. They count toward the total arriving alive when assessing whether your paid quantity was fulfilled.

For example, if you order 10 snails and receive 12, receiving 11 alive fulfills the paid count. If fewer than 10 arrive alive, the shortfall is assessed under the guarantee. Expected bonuses that were not included are not a paid-item shortage.

Checking quantities & reporting a short count

Check the actual animals received against your paid order quantity. For a suspected short count, the full policy calls for a clear counting photo showing all animals, the empty bag and the shipping label before they are introduced into an aquarium. Follow its counting instructions and contact us if you cannot document the count clearly.

Verified miscount claims are resolved with a refund for the missing paid animals under the current policy. A count made after release can be unreliable when animals hide among plants or hardscape.

Before opening: photographs & your first report

Use the email address on the original order and include all arrival concerns in the initial message to support@superiorshrimpaquatics.com within two hours of the carrier’s recorded delivery time. Photograph the sealed bag, visible and countable animals, shipping label, box and packing materials.

If the bag is leaking or damaged, photograph the leak or damage and wet packing before opening. Keep the original photographs and packaging. For cloudy water that prevents counting, take the original cloudy-water photo first and follow the full policy’s specific additional clear-container documentation instructions.

The guarantee contains restrictions on opening bags, acclimation and transfers. Review those instructions before taking action so the evidence needed to assess the claim is preserved.

Arrival problem? Document it promptly.

Email support@superiorshrimpaquatics.com within two hours of the carrier’s recorded delivery time, using the email address on your order.

  • Photograph the original sealed bag with the animals visible and countable.
  • Include the shipping label, outer box and packing materials.
  • Document any bag damage or leakage before opening.
  • Report all arrival losses in your initial message.

Read the full guarantee for photo requirements, cloudy-water documentation and claim eligibility before opening or transferring animals. Approved claims are resolved under the options and conditions stated there.

Shipping & coverage limits

Ground shipping carries increased risk for live animals, and the policy reserves the right to refuse guarantee claims on ground shipments. Choose your shipping method carefully.

The guarantee applies to the first delivery attempt. Redirection, pickup holds and carrier delays can affect eligibility under the full policy. Any product-specific coverage restrictions stated in a listing also apply.

Hitchhikers & quarantine

Live aquatic products can carry tiny hitchhikers or eggs despite inspection. Pest-free arrival is not guaranteed. We recommend quarantining new arrivals before introducing them into an established aquarium.

Returns

Care guidance in this tab does not create additional guarantee requirements or exclusions. Please read the full policies for complete eligibility, documentation, resolution and return requirements.

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