Neritina pulligera
species of mollusc
Neritina pulligera, also known as dusky nerite, black racer, black helmet snail, or steel helmet snail, is a species of freshwater snail of the family Neritidae. Its shell is olive-green to black, typically 20–26 mm (0.79–1.0 in) long, and covers almost the snail's entire body. N. pulligera has an operculum, a "trapdoor" used by the snail to close its shell. Females have a specialised organ (the crystal or reinforcement sac) which stores solid material used to produce a hardened egg capsule. N. pulligera was first described in 1767 by Carl Linnaeus and is the type species (reference species) of the genus Neritina.
N. pulligera is native across the Indo-west Pacific. Despite being sold worldwide as part of the aquarium trade, it has not been recorded outside of its native range as of 2023. The species lives in fast-flowing streams and rivers. Females attach their eggs on the shells of other living snails, which reduces the risk of predation by other snails. Like other neritids, larvae of N. pulligera drift downstream to the sea and juveniles migrate back upstream to reproduce.
This brief starts where responsible research should: with the source description of “Neritina pulligera” as species of mollusc. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the science & nature register because the source frames it as species of mollusc. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Aug 17, 2026. The linked authority identifier is Q293192. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1767 and 2023.
Scientific names, classifications and consensus can change while older terminology persists in catalogues and historical literature. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.
- Current terminology
- Classification context
- Finding cited technical literature
Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.
Three-step research path
- Establish the record: confirm the title “Neritina pulligera”, its source revision and the description used here.
- Expand the search: follow Neritina pulligera primary sources, Neritina pulligera archive and Neritina research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Neritina pulligera”?
- Which observation, specimen, dataset or publication supports the account?
- Is the terminology current, historical or disputed?
Search terms from this dossier
This entry incorporates text from “Neritina pulligera” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.