Chersydrus granulatus   Schneider  1799 (Marine Snake)
Organism information awaits expert curation
Class: Reptilia

Image copyrights: Murthy, TSN

Size: Adults range from 600 mm to 850 mm in average length.
Maximum length: 1.2 m

Color: Dark grey to black above, with narrow, white crossbars many of which tend to fuse near the midbody and disappear or become indistinct in the adult; the underside is dirty white or yellowish; head blackish with a few, small, whitish spots on the crown, and a larger spot on the temporal region.

The arrangement of scales on the head is quite differnet from other colubrid snakes. Small scales on top of the head; 100 small scales round the body.

The female produces from 6 to 8 young at a time.

Synonym (s)
Hydrus granulatus Schneider 1799
Chersydrus granulatus Boulenger 1890

Common Name (s)
• Asiatic File Snake (English)
Economic Importance and Threats



• West Bengal, Sunderban Coast INDIA
• Andaman and Nicobar Islands, Nicobar Islands INDIA

Literature Source(s)
  • Murthy, TSN (1990) A pocket book of the amphibians and reptiles of the Chilka lagoon, Orissa Occasional paper no 125 Records of the Zoological Survey of India ZSI, Kolkata 12785 Available at - NCL, Pune
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Ahmed, S and Dasgupta, G (1992) Reptilia State fauna series 3: Fauna of West Bengal. Part 2 ZSI, Calcutta 1-65 Available at - NIO, Goa
  • Murthy, TSN (1995) Reptilia and Amphibia Wetland ecosystem series 1: Fauna of Chilka lake ZSI, Calcutta 507-560 Available at - NIO, Goa

Page last updated on:2009-06-23

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