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Snake IdentifierAUSTRALIA · FIELD GUIDE
White-bellied Mangrove Snake (Fordonia leucobalia) emerging from a hole in mud.
Photo credit and licence

Lachlan Copeland · CC BY-SA 4.0 · Licence · Source · Resized without cropping; converted to WebP; metadata removed.

Homalopsidae

White-bellied Mangrove Snake

Fordonia leucobalia

A coastal northern Australian water snake with glossy dark upperparts, pale underside and irregular spots.

Probably weakly venomous (rear-fanged)

Identification and appearance

AROD describes glossy black, brown or reddish upperparts, pale below and irregular pale spots above.

Other names

Crab-eating (Water) Snake, White-bellied Water Snake

Typical length

AROD reports an average of 60 cm and a maximum of 100 cm.

Key identification features

  • Glossy dark upperparts
  • Pale underside
  • Irregular pale spots

Where it is found

Northern Territory, Queensland and Western Australia; the wider account spans coastal South and South-east Asia and New Guinea.

Activity

Active at night. A field study in Singapore recorded snakes using mud-lobster mounds and tangles of mangrove roots.

Diet

Crustaceans, especially hard-shelled crabs.

Reproduction

Live-bearing.

Medical significance

Treat any suspected snakebite as an emergency: call 000 and follow snakebite first aid. Do not wait for identification.

What to do if you encounter one

Keep clear and do not handle it. Use a qualified snake catcher or local wildlife authority if it is trapped near people.

Sources checked

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A profile is a guide, not a reason to approach or handle a snake.