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Text and photos by Nick Baker, unless otherwise stated

 EcologyAsia 2009
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Giant Snakehead or Toman
   

This huge adult, reaching almost a metre in length was spotted in a small pond at the margin of Singapore's forests.

Family : CHANNIDAE
Species : Channa micropeltes
Maximum Length : 100 cm

References : F1

Links :
News article : Frankenfish

News article : Ridding Frankenfish ‘could prove difficult’
 

A fearsome fighter, the Giant Snakehead is regarded in Southeast Asia as a sport fish, which also happens to be good eating. The huge powerful jaws are lined with sharp teeth.

The species easily adapts to any freshwater habitat, including ponds, lakes, reservoirs, swamps, streams and drains. Eggs are laid in a sunken nest of vegetation near the shore, and the young are fiercely guarded by the parents. Full grown specimens can cause severe injury to humans who might inadvertently step near the nest. Juveniles are striped brown and black, and travel in large shoals.

This is the largest of all Channa species. It occurs throughout Southeast Asia and has been introduced to some areas, such as Singapore. Recently, introduced Giant Snakeheads have been disrupting the ecology of some U.S. lakes (see links).


An adult pair of Toman keep a close eye on their brood of brightly coloured young.  Seen at MacRitchie Reservoir, Singapore.