Care guide · Freshwater snails

Zebra nerite snail

Vittina turrita

Photo: Dat doris / Wikimedia Commons, CC BY-SA 4.0. Photo: Dat doris · Source · Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)Resized for responsive delivery; no crop, recolour or content edits.

The zebra nerite snail (Vittina turrita) is a peaceful nerite that grazes algae and biofilm from hard surfaces. A mature aquarium with natural growth matters more than spotless glass. The trade name “zebra nerite” is also used for other species, so check the scientific name. Adults live in fresh or brackish water, but the larvae need a salty marine phase. This guide covers aquarium setup, water quality, feeding, tankmates and egg capsules. Where sources disagree, the uncertainty is made clear instead of presenting one disputed value as a proven limit.

Plan your aquarium →

At a glance

Temperature: 22–28 °C
pH: 7.0–8.0
Diet: Herbivore
Adult size: Approximately 2–3 cm
Temperament: Peaceful

About this species

Vittina turrita (Gmelin, 1791) is a nerite snail in the family Neritidae. Nerita turrita is the original combination; older books and shops may use Neritina turrita or Neritina (Vittina) turrita. The shell often has a pale ground with dark wavy bands, but colour and pattern vary. “Zebra nerite” and “tiger nerite” are also applied to other species. Aquarium Glaser warns that related nerites can be difficult to separate by eye or from an ordinary photograph. Ask for the scientific name when buying one, and do not treat an ambiguous trade name as proof of identity.

Natural habitat

The species has been reported from coastal areas from Indonesia to Thailand, including mangrove and river environments. A scientific study examined aquarium-trade specimens and describes the species as inhabiting brackish mangroves and riverine environments. Natural-history profiles place it in shallow, vegetated margins near roots, stones and other hard surfaces. Adults can live in fresh and brackish water, while the larval stage moves towards saltier coastal water. Local habitat conditions vary. Use these descriptions as ecological context, not as an exact aquarium recipe or evidence that every specimen has been acclimated to the same water.

Aquarium and layout

Choose a stable, mature aquarium with visible growth on glass, stones or wood. This snail grazes slowly and needs surfaces where algae and biofilm can develop. A clear but newly set up or frequently scrubbed aquarium may offer too little food. No dependable universal minimum volume has been established: one source lists 50 litres for a community aquarium, but this is not an experimental species minimum. Match the number of snails to available grazing area, food and other inhabitants. Use a well-fitting lid because nerites may climb above the waterline. After introduction, check that the snail attaches and moves normally across surfaces.

Water conditions

Aquarium sources commonly give 22–28 °C; this is a practical hobby range, not an experimentally defined tolerance limit. Published pH guidance conflicts: one source describes 7–8.5 in natural habitat but gives 6.8–7.2 elsewhere for aquarium keeping and cautions that husbandry recommendations are estimates. We therefore show 7–8 as a cautious working range, not a hard biological boundary. Nerites build a calcareous shell and need stable, mineral-containing water. A reliable species-specific minimum GH or KH has not been established. Test your own water, change conditions gradually and avoid copper-containing treatments that can harm invertebrates.

Behaviour and group size

Vittina turrita is a peaceful grazer that usually moves alone across hard surfaces. It scrapes food from stone, glass and decor with its radula. A group is not required for normal activity. Its strong foot can adhere firmly to glass; do not pull it off, but gently nudge from the side if moving it is necessary. Some individuals climb above the waterline. A well-fitting lid reduces escapes while maintaining ventilation. Large fish and snail-eating animals may bite the foot or shell. After introduction, observe whether the nerite can graze undisturbed and is not repeatedly flipped or attacked.

Feeding

Its natural food consists mainly of algae and biofilm growing on fixed surfaces. A peer-reviewed study examined the radula of V. turrita while feeding algae paste. That does not prove that every aquarium product will be accepted. Nerites may starve in a clean or young aquarium before it is obvious to the keeper. Check regularly that visible growth is available, and avoid a sterile setup with only clean glass. Supplemental algae food can be tried, but offer small amounts and remove leftovers. We found no catalog product sufficiently confirmed for this species, so this guide deliberately links neither a branded product nor a guaranteed staple food.

Breeding

The snails have separate sexes, although Aquarium Glaser reports that they are difficult to distinguish externally. A female may attach white, hard, calcareous egg capsules to glass, stones or decor. Capsules can remain even when no larvae develop. Nerite larvae need a salty marine phase, whereas adults live in fresh or brackish water. A normal freshwater aquarium therefore generally will not produce new snails. Do not add salt to a community aquarium to hatch eggs: this can harm fish, plants and other invertebrates, and does not guarantee breeding success.

Keeping with fish

Peaceful small fish may be considered only when their long-term water needs suit one another and the fish do not view the snail as food. Matching temperature alone does not prove a safe combination. In our central records, the neon tetra (Paracheirodon innesi) is discouraged because it is kept in soft, slightly acidic water, whereas nerite care calls for stable, mineral-rich, more neutral water. This assessment concerns water requirements, not aggression between the animals. Large fish, puffers and other snail-eaters are discouraged because they may bite, flip or prey on the snail. Observe behaviour after introduction and separate animals if the snail is repeatedly harassed.

Keeping with other invertebrates

Shared temperature is not the only consideration with other invertebrates. The predatory snail Anentome helena hunts other snails and is unsuitable with V. turrita; this warning follows its known predatory behaviour, not a controlled trial of this exact pair. Peaceful shrimp may compete for biofilm, especially in a small or clean aquarium. Keep enough mature hard surfaces available and check that each species can feed. Avoid crabs and crayfish that can seize snails. Introduce new animals carefully and observe whether the nerite can attach, move and graze.

Exoskeleton, shell and minerals

A snail does not moult like a shrimp. Its shell grows at the edge and may develop pits or erosion because of unsuitable water chemistry, instability or physical damage. Appearance alone does not give a certain diagnosis. Test pH and hardness, and also check that the snail has food and a stable environment. Do not add calcium powder, salt or hardness salts by guesswork; a sudden change may stress other inhabitants. Correct a deficiency only when measurements and stocking support that decision, and do so gradually. Old shell damage does not disappear immediately, although new growth may improve under suitable conditions.

Possible problems

The main risks are food shortage in an overly clean aquarium, escape, predation and injury from forceful removal. A snail that remains still for a long time deserves a check: see whether it is alive, whether the foot responds and whether water conditions are stable. A closed operculum or a short rest alone is not a diagnosis. Make sure the filter intake cannot trap it and do not use copper-containing treatment without checking safety for snails. Never release aquarium animals, egg capsules, water or plants into a pond or natural waterway. Confirm the scientific name at purchase because striped nerites are often sold under overlapping trade names.

Sources & review

This care guide draws on several specialist sources and was last checked on 18 October 2026.

View the sources