Odorrana chloronota (Günther, 1876)
Green Cascade Frog 大綠蛙



Order Anura
Family Ranidae
Scientific name Odorrana chloronota
Chinese name 大綠蛙
Common name Green Cascade Frog

(This species was once considered to be Odorrana livida. A study in Vietnam about the phylogeny and morphology of seven similar Odorrana species suggested that the Hong Kong species should be Odorrana chloronota.)


Size 5 - 10 cm
  • Male are much smaller (usually two times smaller) than females
  • Back green; belly is white
  • All digits with well-developed adhesive discs and entirely webbed
  • A white line runs from the snout to the base of the foreleg

Habitat and Ecology


Forests; breed in pools, marshes, paddy fields and slow-flowing streams.

Behaviour This species is able to secrete a milky fluid on its skin when disturbed. The secretion is toxic and caustic with pungent smell; it is able to kill other frogs.
Activity Nocturnal
Diet Small insects, such as ants and crickets.


Breeding period During rainy season but mainly between May and July.
Mating call
(Please click to play) 
Larvae Dark brown. About 30 mm.
Egg Medium-sized, about 2.4 mm. Creamy white.


Distribution and Conservation


Distributed in New Territories (e.g Tai Po Kau, Tai Mo Shan), Hong Kong Island (Lung Fu Shan, Tai Tam Reservoir) and Lantau Island (e.g. Shek Pik). Widely distributed in northeastern India, Myanmar, Vietnam, central and southern China.

Conservation status (IUCN)

Least Concern



adult 5

adult 1

adult 2

adult 4