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Text and photos by Nick Baker, unless credited to others.
Copyright © Ecology Asia 2025

 
     
 

 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

   
   
 
Giant Snakehead or Toman (introduced) 
Channa micropeltes
   
   

Fig 1


Fig 2


Fig 3


 

 

 

 

 

 

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

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. Fully grown specimens can cause severe injury to those who might inadvertently step near the nest, or threaten their young. 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.


Fig 1 : Adult specimen, measuring an estimated 80 cm from tip to tail, at Macritchie, Singapore.

Fig 2 : This species often comes to surface for a breath of air.

Fig 3 : An adult pair of Giant Snakehead keep a close eye on their brood of brightly coloured young, at Macritchie, Singapore.


References :

Lim, K.P. and Ng, K.L. 1990. A Guide to the Freshwater Fishes of Singapore. Singapore Science Centre.