A published species name is evidence context, not permanent identity
Why can older and newer sources use different names for apparently related shrimp?
Why it looks conflicting
Older field records, morphology-based revisions, mitochondrial barcodes and integrative taxonomic studies may place similar-looking material under different names or lineages.
Bounded reconciliation
Taxonomic conclusions depend on the specimens, characters, loci, reference material and species concept used. Later reassignment changes how an older result should be scoped; it does not erase the observation or transfer it automatically to N. davidi.
Still unresolved
The corpus does not resolve every Neocaridina species treatment, authenticate commercial animals from a photograph or make one barcode a universal identity test.
Decision boundary: Retain the source taxon exactly as published, report later reassignments separately and narrow care transfer when identity is uncertain. Do not silently modernize a name and inherit all conclusions.
Compare the exact records
A revision of the Caridina serrata species group, with descriptions of five new species (Crustacea: Decapoda: Caridea: Atyidae)
Role in this comparison: Reassigns a historically published Neocaridina population using later morphological material.
What the record supports: The Lam Tsuen population published by Dudgeon in 1985 and 1987 as Neocaridina serrata was reassigned to Caridina cantonensis. The revision also concluded that neither C. cantonensis nor C. serrata belongs in Neocaridina because the distal half of the male first pleopod lacks the Neocaridina condition.
What the record does not support: The revision does not make every aquarium animal sold as C. cantonensis taxonomically verified, resolve all later Caridina species-group relationships or convert Dudgeon field results into captive care guidance. It did not re-run the 1985 population study, and its reassignment does not establish temperature, lifespan, maturity, clutch or abundance rules for N. davidi.
Integrative Taxonomy Reveals Freshwater Shrimp Diversity from Kyushu and Southern Honshu of Japan, with a Discussion on Introduced Species
Role in this comparison: Combines morphology, COI and geography and shows limits of one barcode or character.
What the record supports: Integrative evidence distinguished several co-occurring Neocaridina lineages and exposed limits of a single barcode or character.
What the record does not support: The Japanese field result does not identify a commercial colour line, establish ancestry from a photograph or resolve every competing species treatment.
Barcoding of ornamental freshwater shrimp, Neocaridina denticulata (De Haan, 1844) from the aquatic ornamental market in Purbalingga, Central Java, Indonesia
Role in this comparison: Illustrates the audit limits of a small market sample and one short mitochondrial fragment.
What the record supports: Within this market sample and assay, the ten sequence entries labelled dark red, bright red, black, white, blue-black combinations or yellow were reported at 98.24 to 99.29 percent identity to the same Chinese N. denticulata mitochondrial reference, and the study reported zero pairwise distance among its sampled sequences. Visible colour labels therefore did not separate those sampled entries into different reported CO1 groups.
What the record does not support: This is a ten-specimen convenience sample from one market, not a survey of named global trade lines, farms, sellers or source populations. Collection wording does not resolve whether specimens came from one seller, aquarium, brood or colony. No morphological key, sex-based diagnostic structures, voucher deposition, extraction blank, PCR negative control, replicate extraction or new sequence accession is reported, so the specimen identity and sequence audit cannot be independently reconstructed from the article. The blue lane in Figure 2 has no band, the figure numbers lanes 1 to 10 while the text refers to samples 2 to 11, and Table 2 reports ten sequence entries without a standalone blue entry. The methods and Figure 3 describe a Jukes-Cantor tree, while Table 3 is labelled Kimura 2 parameter. The article reports 0.00 distance among the study entries even though their BLAST identities to the same reference vary from 98.24 to 99.29 percent, and its new sequences are not shown as deposited accessions. Low branch support appears across several reference relationships, the outgroup is a tunicate rather than a closer atyid, and the selected reference labels include disputed or inconsistent Neocaridina names. A short mitochondrial fragment records one maternally inherited locus; it cannot establish nuclear ancestry, pedigree, relatedness, genetic purity, line stability, inheritance, hybrid status or the species identity of another shrimp based on colour or a matching seller label.
Species diversity of freshwater shrimp in Henan Province, China, based on morphological characters and COI mitochondrial gene
Role in this comparison: Compares morphology and molecular partitions across a large regional field survey.
What the record supports: Morphological variation and molecular partitions did not reduce to one simple visual species rule in the sampled freshwater shrimp.
What the record does not support: The survey does not authenticate aquarium trade names, grades, purity or lineage, and a COI similarity threshold is not a universal species test.
Related public claim checks
Reviewed 2026-08-12. Challenge this comparison or provide a missing source.