| Phylum Chordata
> Subphylum Vertebrata > Class Reptilia > shore
snakes |
Banded
file snake
Acrochordus granulatus
Family Acrochordidae
updated
Sep 08
Where
seen? This
snake with bands is sometimes seen on some of our shores, near seagrass
meadows and mangroves. According to Baker, it is mainly found in the
Johor Straits including Sungei Buloh Wetland Reserve and was also
found out of water, hidden in mudlobster
mounds. A nocturnal snake, it is usually seen in the late evening
or early morning. It is widely distributed from India to Southeast
Asia to southern China and northern Australia. It was previously known
as Chersydrus granulatus.
Features: To about 1m, but usually
shorter. Body cylindrical, banded with black or brown bands on white
or beige. The bands are broad on the top of the snake but narrows
at the sides. It does not have a distinct 'neck', the head is small
and blunt. On the underside, it has no enlarged scales and instead
has a prominent fold of skin along the centre of the belly. The tail
is tapered to a point and is not flattened. The Banded file snake
is non-venomous and harmless to humans.
Sometimes confused with the highly
venomous Yellow-lipped sea snake (Laticauda
colubrina). Here's how to tell apart banded
snakes seen near the coast. It may also be confused with eels.
Here's more on how to tell apart
sea snakes, eels and eel-like animals.
Another file snake recorded for Singapore is the Elephant trunk water
snake (Acrochordus javanicus). It is longer, grows to about
2.9m. It is not banded and is olive brown to grey brown with faintly
marbled black pattern on the sides. The underside is lighter than
the upperside. There is no prominent central fold on the underside.
In slow-moving waters of estuaries and freshwater streams and canals.
What does it eat? Mainly small fishes
such as bottom dwelling gobies.
The snake has a loose skin covered with small rough scales. The file-like
skin helps it to grip its slippery prey. The snake has tiny eyes and
a small mouth.
File Babies: Mama snake does not
lay eggs and instead, gives birth to live young in litters of 5-10.
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Pulau Sekudu, Jul 05

Loose,
granulated skin
Pulau Sekudu, Jul 05

Central
fold on the underside
Pulau Sekudu, Jul 05
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| Status
and threats: Our file snakes are not listed among
the threatened animals of Singapore. However, like other creatures
of the intertidal zone, they are affected by human activities
such as reclamation and pollution. |
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Small eyes (clouded, suggesting
the snake is about to moult)
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Banded
file snakes on Singapore shores

Chek Jawa, Oct 01
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A
barnacle had settled on the snake!
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Chek Jawa, Jun 03
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Loose
skin and the tail is not paddle-shaped
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Covered
with algae!
Pulau Semakau, Nov 07
Photo
shared by Lin Juanhui on her
flickr.
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Pulau Sekudu, Jul 09
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Pulau Semakau, Aug 11
Photo
shared by James Koh on his
blog.
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video
clip of banded file snakes on Singapore shores
Family
Acrochordidae recorded for Singapore
from
Wee Y.C. and Peter K. L. Ng. 1994. A First Look at Biodiversity
in Singapore.
*from Lim, Kelvin K. P. & Francis L K Lim, 1992. A Guide to the
Amphibians and Reptiles of Singapore
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Acrochordus
javanicus
*Acrochordus granulatus |
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Links
References
- Lim, Kelvin
K. P. & Francis L K Lim, 1992. A
Guide to the Amphibians and Reptiles of Singapore
Singapore Science Centre. 160 pp.
- Baker, Nick
and Kelvin Lim. 2008. Wild
Animals of Singapore: A Photographic Guide to Mammals, Reptiles,
Amphibians and Freshwater Fishes
Vertebrate Study Group, Nature Society (Singapore). 180 pp.
- Stuebing,
Robert B and Robert F. Inger. 1999. A
Field Guide to the Snakes of Borneo
Natural History Publications (Borneo). 254 pp.
- Cox, Merel
J., Peter Paul van Dijk, Jarujin Nabhitabhata and Kumthorn Thirakhupt.
1998. A
Photographic Guide to Snakes and Other Reptiles of Thailand, Peninsular
Malaysia and Singapore
New Holland. pp 144.
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