Thai National Parks

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Reptiles of Thailand

Species of Thailand

Rainbow mud snake

Thai: งูสายรุ้ง, ngu sai rung

Binomial name: Enhydris enhydris, Johann Gottlob Theaenus Schneider, 1799

The rainbow water snake, Enhydris enhydris, is a species of mildly venomous, rear-fanged, colubrid snake, endemic to Asia.

Geographic range

E. enhydris is found in southeastern China, Indonesia (Bangka, Belitung, Java, Kalimantan, Sulawesi, Sumatra, We), Bangladesh, Cambodia, central and eastern India, Laos, Malaysia (Malaya and East Malaysia, Borneo, Pulau Tioman), Myanmar (Burma), Nepal, Pakistan, Singapore (?), Sri Lanka, Pulau Bangka, Thailand, and Vietnam.

Type locality: "Indiae orientalis"

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Scientific classification

Enhydris enhydris

Common names

  • German: Gestreifte Wassertrugnatter
  • English:
    • Rainbow mud snake
    • Rainbow water snake
    • Striped water snake
    • Smooth water snake
  • Thai: งูสายรุ้ง, ngu sai rung


  • Enhydris enhydris, John C. Murphy & Harold Knight Voris (2014)
  • Enhydris enhydris, Nguyen Van Sang et al. (2009)
  • Enhydris enhydris, Merel J. Cox et al. (1998)
  • Enhydris enhydris, Ulrich Manthey & Wolfgang Grossmann (1997)
  • Enhydris enhydris, Malcolm Arthur Smith (1943)
  • Hypsirhina enhydris enhydris, René Léon Bourret (1934)
  • Enhydris enhydris, Thomas Barbour (1912)
  • Hypsirhina enhydris var. bilineata, Volz (1904)
  • Hypsirhina enhydris, Giorgio Jan (1863)
  • Hypsirhina enhydris, Auguste Henri André Duméril & Gabriel Bibron (1854)
  • Homalopsis enhydris, Theodore Edward Cantor (1847)
  • Hypsirhina bilineata, John Edward Gray (1842)
  • Hypsirhina furcata, John Edward Gray (1842)
  • Hypsirhina aer, Johann Georg Wagler (1830)
  • Homalopsis aer, Heinrich Boie (1827)
  • Homalopsis aer, Heinrich Boie (1826)
  • Coluber pythonissa, François Marie Daudin (1803)
  • Hydrus atrocaeruleus, George Shaw (1802)
  • Enhydris caerulea, Pierre André Latreille in Charles-Nicolas-Sigisbert Sonnini & Pierre André Latreille (1801)
  • Hydrus enhydris, Johann Gottlob Theaenus Schneider (1799)

Conservation status

Least Concern (IUCN3.1)

Least Concern (IUCN3.1)

Enhydris enhydris

Enhydris enhydris

Creative Commons Attribution-ShareAlike 4.0 International Thai National Parks

Rainbow water snake

Rainbow water snake

Creative Commons Attribution-ShareAlike 4.0 International Thai National Parks

Distribution map of Rainbow mud snake, Enhydris enhydris in Thailand
  • Amphawa District, Samut Songkhram
  • Bangkok Province
  • Chom Bueng District, Ratchaburi
  • Hankha District, Chainat
  • Khao Yai Da
  • Khao Yoi District, Phetchaburi
  • Khlong Luang District, Pathum Thani
  • Khuan Khanun District, Phatthalung
  • Khukhan District, Sisaket
  • Lom Sak District, Phetchabun
  • Mae On District, Chiang Mai
  • Mueang Chaiyaphum District, Chaiyaphum
  • Mueang Nakhon Pathom District, Nakhon Pathom
  • Mueang Nakhon Sawan District, Nakhon Sawan
  • Mueang Phichit District, Phichit
  • Na Yong District, Trang
  • Nakhon Thai District, Phitsanulok
  • Pak Thong Chai District, Nakhon Ratchasima
  • Pang Sida National Park
  • Phetchaburi Coast
  • Phrom Khiri District, Nakhon Si Thammarat
  • Prachantakham District, Prachinburi
  • Su-ngai Kolok District, Narathiwat
  • Sung Noen District, Nakhon Ratchasima
  • Tak Bai District, Narathiwat
  • Tarutao National Marine Park
  • Thanyaburi District, Pathum Thani
  • Ubolratana District, Khon Kaen
  • Wichian Buri District, Phetchabun
  • Yang Talat District, Kalasin

Range map of Enhydris enhydris in Thailand

Important note; our range maps are based on limited data we have collected. The data is not necessarily accurate or complete.

Special thanks to Ton Smits, Parinya Pawangkhanant, Ian Dugdale and many others for their contribution for range data.

It is free to use this map on various media. See the creative common license terms by clicking "CC" icon below the map. But remember, again; the map may not be accurate or complete.

Contribute or get help with ID

Please help us improving our species range maps. To add a new location to the range map we need a clear image of the specimen you have encountered. No problem if you do not know the species, we will do our best to identify it for you.

For the location, please provide the district name or the national park/ wildlife sanctuary name.

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