Sanctuary Wildlife Service Award 2011, Sathyabhama Das Biju (born May, 1963) is an Indian amphibian biologist, wildlife conservationist and heads the Systematics Lab at the University of Delhi, Department of Environmental Studies and is currently in Harvard University as a Radcliffe Fellow at the Radcliffe Institute for Advanced Study.

[8] A Radcliffe Hrdy fellow,[9] Biju has also served as the Dean, Faculty of Science and Head, Department of Environmental Studies at University of Delhi.

[18] Remarkable among his discoveries are the entirely new and famed purple frog family Nasikabatrachidae from the Western Ghats of India, published in the journal Nature.

His second discovery of a new amphibian family was in 2012, the Chikilidae, popularly called tailless burrowing caecilians or chikilids, published in the journal Proceedings of the Royal Society, Series B.

[22] Both these discoveries of ancient lineages (both the families about 140 million years old) shed significant light on the biogeographic history of the Earth, particularly that of the Gondwana, and in understanding the present-day continental distribution patterns of organisms–while the closest relatives of the purple frog lives 3,000 km across the Indian Ocean in the Seychelles,[20] that of the chikilids is found 7,000 km in Africa.

A critical aspect of Biju's work has been the combination of molecular techniques with traditional approaches[5] bringing on par with the international practice in amphibian research.

In collaboration with national and international institutions and individuals, Biju launched a unique nationwide campaign called the Lost Amphibians of India (LAI) to rediscover 'lost' species that have not been sighted in life for as long as two centuries since they were originally discovered and described.