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Morphology or taxonomy Direct Neocaridina evidence

Neocaridina fonticulata, a new land-locked freshwater shrimp from Hengchun Peninsula, Taiwan (Decapoda, Caridea, Atyidae)

Shih, Cai and Chiu, 2019. ZooKeys 817: 11-23.

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This record is a claim boundary, not a quality badge. Evidence class and species relationship describe what was studied. They do not make the result universal, complete or automatically applicable to a home aquarium.

Source taxon as published
Neocaridina fonticulata Shih, Cai and Chiu, 2019, described from type and additional material collected at Sheding, Kenting, southern Taiwan
Environment
A leaf-litter layer in a small, slow-flowing headwater stream beside a spring outlet on a limestone hill at Sheding, Kenting; the paper reports about 25 C water, pH 7.06 to 7.16 and dissolved oxygen 7.33 to 7.70 mg/L at the collection site, while examined specimens were preserved in 70 to 95 percent ethanol
Life stages
adult male, adult female, ovigerous female, attached egg
Reviewed
2026-08-12

What was studied

Study shape: The authors described a holotype, multiple paratype lots and additional field material using external morphology and drawings, compared material of Neocaridina ikiensis, measured five eggs from each of four ovigerous females, and analyzed a 658-base-pair mitochondrial COI segment from four Sheding specimens with Bayesian and maximum-likelihood phylogenetic methods and pairwise distances.

Experimental unit: Individual deposited specimen for morphology, four source shrimp for COI that yielded one reported haplotype, and 20 eggs nested within four ovigerous females for egg measurements

Endpoints: type locality and deposited material, rostrum and appendage diagnostic characters, male first and second pleopod morphology, egg dimensions, live colour description, COI haplotype and phylogenetic placement, pairwise mitochondrial distance.

Claim boundary

What it can support: The combined type material, comparative morphology and sampled COI evidence support recognizing N. fonticulata as a distinct Neocaridina species in the reviewed 2019 treatment. Diagnostic evidence includes the rostrum, pereiopods and male first and second pleopods. The four sequenced shrimp produced one 658-base-pair COI haplotype, LC427866, and the smallest reported K2P distances to sampled N. ketagalan and N. saccam were 5.42 and 5.43 percent.

What it cannot support: The species was then known only from one Sheding locality, so the report does not establish its complete distribution, population size, seasonal habitat range or conservation status; the authors prediction that it may occur in eastern Taiwan was not a sampled result. Several diagnostic characters require an adult male, dissection and specialist comparison, so body colour or one aquarium photograph cannot identify the species or distinguish it from a trade morph. The molecular result used four shrimp, one mitochondrial haplotype and no nuclear locus, cross, genomic ancestry test or blind identification validation. Mitochondrial separation in this sample does not authenticate a seller label, certify a colour line, prove reproductive isolation or identify another animal by appearance. Site temperature, pH and dissolved oxygen are locality observations without temporal replication or an assigned comparison, not aquarium optima, tolerances or care targets. Aquarium-held photographs were for observation after collection, not a husbandry experiment.

Publication status audit

Matched in dated Crossref query

The canonical DOI appeared in the dated broad query and carried no registered update in that response. This is a metadata observation, not proof that the work has never changed.

Metadata snapshot reviewed 2026-08-12. Inspect the method, unmatched queue and limitations.

Correction impact

If this source boundary changes, these are the known downstream consumers. The list distinguishes scientific re-review from generated parity and historical follow-up.

Editorial review required (10)

This curated wording or synthesis must be reconsidered when the source boundary changes. A passing generator test cannot decide the new scientific meaning.

  • anatomy decision card Tank-side decision card
    The card translates this guide into an observation, first action, next record and stopping boundary, so all four require editorial review when the source changes.
  • genetics decision card Tank-side decision card
    The card translates this guide into an observation, first action, next record and stopping boundary, so all four require editorial review when the source changes.
  • parameters decision card Tank-side decision card
    The card translates this guide into an observation, first action, next record and stopping boundary, so all four require editorial review when the source changes.
  • species decision card Tank-side decision card
    The card translates this guide into an observation, first action, next record and stopping boundary, so all four require editorial review when the source changes.
  • surplus decision card Tank-side decision card
    The card translates this guide into an observation, first action, next record and stopping boundary, so all four require editorial review when the source changes.
  • anatomy practical guide Practical guide
    The guide uses this evidence record and its practical wording must remain inside the revised source boundary.
  • genetics practical guide Practical guide
    The guide uses this evidence record and its practical wording must remain inside the revised source boundary.
  • parameters practical guide Practical guide
    The guide uses this evidence record and its practical wording must remain inside the revised source boundary.
  • species practical guide Practical guide
    The guide uses this evidence record and its practical wording must remain inside the revised source boundary.
  • surplus practical guide Practical guide
    The guide uses this evidence record and its practical wording must remain inside the revised source boundary.

Generated from governing registry (22)

This surface derives from a governing registry and should update with it, but release tests must still prove parity and routing.

Historical record needs follow-up decision (1)

Do not silently rewrite history. Decide whether the prior change record remains accurate and publish a new correction or scope note when needed.

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How this record is classified

Morphology or taxonomy: Anatomy, specimen identification or taxonomic relationships were studied with stated methods. A trade name or photograph cannot replace those methods.

Direct Neocaridina evidence: The source measured animals named within Neocaridina. Direct still does not mean universal or sufficient.

Topics: Anatomy, Genetics, Habitat, Species and taxonomy, Water parameters, Wild populations

Critically appraise this source without a score

These questions fit this record's morphology or taxonomy role. They are prompts, not automatic judgments. Open the original source to answer them.

  1. Identity and provenance: How were the organism, population, stock and life stage identified and sourced? A published name or seller label can hide a taxonomic, population or life-stage transfer.
  2. Independent unit: What unit was independently assigned or sampled, and how many units support each comparison? Animal counts do not create independent replication when animals share a vessel, site, family or treatment history.
  3. Comparison and context: What was the actual comparator, allocation process, environment, duration and material condition? A result has meaning only against the comparison and conditions that produced it.
  4. Endpoint and measurement: Which endpoint was measured, with what method, unit, timing, resolution and decision rule? One endpoint cannot silently become survival, welfare, diagnosis, reproduction or long-term population performance.
  5. Denominators and missingness: Are starting counts, exclusions, losses, missing observations and analysis denominators reconciled? Unreported or changing denominators can alter the apparent direction, precision and applicability of a result.
  6. Transfer boundary: What is the nearest tempting aquarium claim that this source design cannot establish? Direct evidence can still be narrow, and adjacent evidence can be useful only while the inference remains visible.
  7. Examined material: Which specimens, localities, sexes, stages, types or sequence accessions were actually examined? A diagnosis applies to examined material and methods, not automatically to a trade-line photograph.
  8. Diagnostic characters: Which characters or loci distinguish the taxon, and were alternatives explicitly compared? Color alone may be variable, convergent or unrelated to the diagnostic character.
  9. Name history: Were synonyms, historical combinations, type material and later revisions checked? An older title can describe a population that later work placed in another taxon.
  10. Consumer identification limit: Can the required character or method be observed reliably in an ordinary live-animal image? A valid taxonomic method may still be unavailable to a keeper examining one photograph.

Read the complete appraisal framework.

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