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  Text and photos by Nick Baker, unless otherwise credited.
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Poisonous Rock Frog
   
   

Fig 1


Fig 2


Fig 3


Fig 4


Fig 5



 

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 specimens shown here were found resting on fallen trees and moss-covered boulders next to a clear forest stream near Gunung Panti, Malaysia. All specimens were easily approachable.

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 at Sungai Yu, Pahang, Peninsular Malaysia.

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

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

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

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


References : H3