Vertebrate fauna of SE Asia
  

 

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Text and photos by Nick Baker, unless otherwise credited.
Copyright ゥ Ecology Asia 2020

 
 
     
   
   

 

   
   
 
River Toad
   
   

Fig 1


Fig 2


Fig 3


Fig 4


 

 

Family : BUFONIDAE
Species : Phrynoidis aspera
Size (snout to vent) :  Female 10 cm, Male 12 cm

This is the second largest of the Bufo genus in the region, after the Giant River Toad Phrynoidis juxtaspera. Females can reach a maximum size of 12 cm (snout-to-vent); with the addition of powerful back legs this toad can appear very large indeed. 

The species inhabits lowland primary and secondary forests, and at night it may be found amongst rocks and sandbanks by streams and rivers. It is identified by its large size and broad head.  

It ranges from Burma through Thailand and Peninsular Malaysia to Sumatra, Java and Borneo. The absence of fast-flowing rivers means it is absent from Singapore.


Fig 1 : Clinging to a slippery streamside rock at Langkawi, Peninsular Malaysia.

Fig 2 : Specimen at the margins of a forest stream at Belum, northern Peninsular Malaysia.

Fig 3 : Large specimen with pink and bluish mottling on its flanks, Fraser's Hill, Peninsular Malaysia.

Fig 4 : Juvenile found in Johor, Peninsular Malaysia.


References : H3