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 Southeast Asia

  

 

   
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Text and photos by Nick Baker, unless credited to others. Copyright ゥ Ecology Asia 2026

 
     
 

 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

   
   
 
Poisonous Rock Frog  - 
Odorrana hosii
   
   

Fig 1


Fig 2


Fig 3


Fig 4


Fig 5


Fig 6


Fig 7




 









 

Family : RANIDAE
Species : Odorrana hosii
Size (snout to vent) :
Female 10 cm,  Male 7 cm

A large, distinctive frog to be found near fast-flowing streams, cascades and waterfalls up to 1500 metres elevation. The examples shown here were found resting on fallen trees and moss-covered boulders next to a clear forest stream.

The large size, typically Ranid body shape and the green and brown patterning serve to distinguish this species from the Common Greenback Hylarana erythraea. 

The species ranges from southern Thailand and Peninsular Malaysia (including Penang and Tioman islands), to Borneo, Sumatra and Java.


Fig 1 : Brownish pair next to a clear, fast-flowing river in  Pahang, Peninsular Malaysia.

Fig 2 : Typical colour patterning, seen at Johor, Peninsular Malaysia.

Fig 3 : Clinging to a moss-covered, stream-side boulder in Johor, Peninsular Malaysia.

Fig 4 : Example from Fraser's Hill, Peninsular Malaysia with less typical patterning comprising minor yellowish-green blotches on a brown background.

Fig 5 : Pale green example from Fraser's Hill, Peninsular Malaysia.

Fig 6 : Example from Taiping, Peninsular Malaysia, at the base of Maxwell Hill (Bukit Larut).

Fig 7 : Example from Lata Ulu Chepor, Perak, Peninsular Malaysia. The smaller frog in the background is a Larut Torrent Frog (Amolops larutensis) which briefly attempted to mate with the Poisonous Rock Frog.


References :

Manthey U., Grossmann W., 1997. Amphibien und Reptilien Sudostasiens. Natur und Tier - Verlag.