Guwahati, April 25 -- In a major discovery in biodiversity research, scientists have documented the rare cascade frog Amolops nyingchiensis in Arunachal Pradesh's Dibang river basin, marking its first recorded presence in India.

Until now, this species had only been reported from its original discovery site in Medog, located in the Nyingchi Prefecture of southeastern Tibet, China. This new finding extends its known geographical range by more than 60 kilometers into Indian territory, underscoring the rich yet insufficiently explored amphibian diversity of Northeast India.

The research team, led by Jayanta K. Roy and colleagues, confirmed the species through detailed morphological examination along with genetic analysis using 16S rRNA seq...