Clinotarsus alticola

Clinotarsus alticola is a ranid frog known by names including the Assam Hills frog, Annandale's frog, pointed-headed frog and high-altitude frog. Males are 32-47 mm in snout-vent length and females 43-61 mm (Wikipedia, general species account).

Its tadpoles are distinctive: large (up to 98 mm), with many glands, black with red ocelli, and the colouring may be aposematic. The male's call is a bird-like chirp. At breeding sites males greatly outnumber females and try to dislodge one another from the backs of females, and outside the breeding season adults are rarely seen (Wikipedia, general species account).