Endemic Species of Vietnam

Vietnam’s country endemism is concentrated in several different isolation systems: the Hoang Lien high mountains, limestone karsts in the north, the Trường Sơn/Annamite chain, the Ngoc Linh massif, the Da Lat–Langbian Plateau and small offshore islands. National totals vary sharply among taxonomic treatments, so mammal, bird, reptile, amphibian and plant datasets are kept separate rather than combined into an artificial all-taxa total.

Why Vietnam has more than one endemic-species count

Standardized global databases and Vietnam-focused taxonomic studies do not recover identical endemic totals. The IUCN 2025-2 country table covers comprehensively assessed vertebrate groups under the Red List taxonomic and distribution treatment, whereas the specialist Vietnam studies incorporate other revisions, range interpretations and publication dates. The values remain useful when their boundaries are preserved.

These columns are not alternative versions of one interchangeable dataset. Taxonomic splits, synonymy, new cross-border records and different assessment coverage can all change whether a species qualifies as country-endemic in a particular treatment.

Where Vietnam’s endemism concentrates

Vietnam’s elongated shape crosses several mountain systems and climatic zones, but many strict endemics occupy much smaller geographic units. High-elevation massifs, isolated karst blocks, plateaus and islands repeatedly appear in the native ranges of country-endemic species.

The Annamites cross the national border

The Trường Sơn or Annamite system is a major center of restricted-range biodiversity, but an Annamite endemic is not automatically a Vietnam endemic. Phong Nha–Ke Bang in Vietnam and Hin Nam No in Laos were recognized in 2025 as one transboundary World Heritage property covering 217,447 hectares. The property lies where the Annamite Range meets the Central Indochina Limestone Belt and contains more than 220 km of documented caves and subterranean rivers. ^[S7]

That landscape illustrates why ecological and evolutionary units cannot be treated as if they end at a political boundary. Species restricted to this limestone–mountain system may be regional endemics shared by Vietnam and Laos rather than strict Vietnam endemics.

Micro-endemic mammals occupy far smaller ranges than the country

The 2024 mammal assessment defined a micro-endemic as a country-endemic mammal confined to one biogeographic region with an estimated distribution covering at most 1% of Vietnam. Nine species met that study definition. ^[S1]

A country-endemic label therefore covers very different range sizes. A species restricted to one island, mountain or karst system has much less geographic redundancy than an endemic distributed across several Vietnamese regions.

Limestone isolation is visible in Vietnam’s endemic primates

Trachypithecus delacouri, the Delacour’s langur, is a Vietnam-endemic limestone specialist. A UNESCO tentative-list dossier submitted in 2026 for the Van Long–Kim Bang–Tam Chuc landscape reports roughly 350 wild individuals there, representing more than 90% of the remaining wild population cited by that dossier. ^[S8]

The Cat Ba langur, Trachypithecus poliocephalus, represents a still narrower pattern: the 2024 mammal assessment treats it as a micro-endemic restricted to Cat Ba. Northern limestone landscapes also hold the country-endemic Tonkin snub-nosed monkey, Rhinopithecus avunculus. ^[S1]

The silver-backed chevrotain is a southern micro-endemic

Tragulus versicolor is treated as country-endemic and micro-endemic in the national mammal analysis. Camera-trap work reported in 2026 expanded its documented distribution to five sites in Vietnam, including four newly documented sites from surveys conducted between 2018 and 2025. Its known populations remain fragmented in south-central Vietnam. ^[S9]

Reptiles form the largest endemic vertebrate set in the specialist assessment

The 2023 national reptile study classified 159 of 484 recorded species as endemic to Vietnam. Lizards account for most of that set, followed by snakes and three turtles. No crocodilian was classified as a Vietnam endemic in the dataset. ^[S3]

{
  "type": "bar",
  "title": "Vietnam-endemic reptiles by major group in the 2023 national assessment",
  "description": "Species classified as endemic to Vietnam within the same 484-species reptile dataset.",
  "unit": "species",
  "data": [
    {
      "label": "Lizards",
      "value": 119
    },
    {
      "label": "Snakes",
      "value": 37
    },
    {
      "label": "Turtles",
      "value": 3
    },
    {
      "label": "Crocodilians",
      "value": 0
    }
  ],
  "source": "[S3] Stenger et al. 2023"
}

More than half of the endemic reptiles had only local records

The same study classified endemic reptiles by estimated distribution scale. The local category consisted of species known only from their type locality, while wider categories represented progressively broader distributions. ^[S3]

Of the 159 endemic reptiles, 135 were recorded from only one region and 143 were confined to one of the study’s three macroregions. The Central Annamites held the highest endemic richness among the 13 subregions, with 32 species. ^[S3]

The protected-area analysis also exposes the problem created by very small ranges. Fifty-three of 158 endemics included in that analysis had no protected-area record, and 27 of those 53 were known only from their type locality. ^[S3]

Amphibian endemism changes as ranges and species limits are revised

A 2023 review reconciled taxonomic and distribution information from multiple datasets and recognized 93 Vietnam-endemic amphibian species plus 32 sub-endemics. The authors’ earlier compilation had contained 95 country endemics, showing that revisions can change a national count without any biological range expansion occurring at the same moment. ^[S4]

Current species accounts continue to alter the boundary between strict country endemism and wider Indochinese distribution. One 2026 addition moves in the opposite direction: Tylototriton vietnamirabilis, described from evergreen forest on Phu Xai Lai Leng Mountain in Nghe An Province, is currently known only from that mountain and is classified as endemic to Vietnam. ^[S10]

This turnover also affects historical species lists. A species originally described from Vietnam, or once known only from Vietnam, can leave the strict country-endemic set when a natural population is verified across a border. Conversely, newly resolved lineages can enter the set when species-level taxonomy and native distribution support a Vietnam-only range.

Synonyms can create false duplicate endemics

Liuixalus calcarius is a Cat Ba–Hai Phong endemic in the current Amphibian Species of the World treatment. Liuixalus catbaensis, described separately from Cat Ba, is treated there as a synonym of L. calcarius. Counting both names would create two checklist records for one accepted species. ^[S39]

Bird endemism is concentrated in a few montane regions

The 2025 bird assessment recognized 803 native species, including 10 country endemics and 17 near-endemics. Five of the 10 endemic species have the Da Lat Plateau explicitly within the ranges reported by that study: Chloris monguilloti, Garrulax annamensis, Laniellus langbianis, Trochalopteron yersini and Schoeniparus klossi. ^[S2]

Other country-endemic birds define separate montane centers. Trochalopteron ngoclinhense is associated with the Central Trường Sơn and Kon Tum Plateau, while Napothera pasquieri is associated with the Hoang Lien Mountains in northwestern Vietnam. Lophura edwardsi occupies a central-Vietnam distribution in the same assessment. ^[S2]

Plant records require species-rank and range control

More than 13,500 vascular-plant species have been recorded for Vietnam, but that flora total cannot be converted into a current endemic-species total without a compatible national endemic checklist. ^[S5] Current Kew range accounts nevertheless verify many individual species whose native distributions are confined to Vietnam, including endemic orchids, begonias, camellias and conifers.

A Vietnamese name or type locality is not enough to establish country endemism. Panax vietnamensis, for example, is currently accepted by Plants of the World Online with a native range extending from the eastern Himalaya through parts of China to Vietnam. The species therefore does not belong in a strict Vietnam-endemic species checklist. ^[S15]

Species rank also has to remain separate from varieties and other infraspecific ranks. A Vietnam-restricted variety does not make its parent species Vietnam-endemic if the species itself has a wider natural distribution.

Species closely associated with Vietnam that are not country endemics

Several animals strongly associated with Vietnam, the Annamites or Vietnamese conservation programs have natural ranges that cross an international border. They should not be inserted into a strict country-endemic checklist.

Why narrow endemic ranges create concentrated exposure

The biological issue is often the amount of habitat represented by a species’ entire natural range. The reptile dataset found 88 endemics known only from a type locality and 53 of 158 species in its protected-area analysis without a protected-area record. Twenty-seven of those 53 were local/type-locality species. ^[S3]

Verified endemic species checklist

Vietnam’s endemic biota is larger than the records below: the specialist reptile assessment alone recognized 159 country endemics and the 2023 amphibian review recognized 93. The tables below are a source-bounded species-rank reference set. They include the complete 10-species bird set from the 2025 assessment, all nine mammal micro-endemics from the 2024 assessment, additional country-endemic mammals, and current range-verified records from plants, reptiles and amphibians. Subspecies, varieties and synonym duplicates are excluded as rows.