Overview
Bhupathy’s Purple Frog (Nasikabatrachus bhupathi) is an ancient, bizarre fossorial amphibian described in 2017 from the eastern slopes of India’s Western Ghats. Named in honor of the late Indian herpetologist Subramanian Bhupathy, this living fossil belongs to a lineage that diverged from ancestral sooglossid frogs over 100 million years ago during the breakup of the Gondwana supercontinent. Possessing a bloated, deep-violet body, a pointy white-tipped snout, and tiny beady eyes, this creature spends almost its entire lifespan underground.
Biology and Physical Characteristics
The morphology of Nasikabatrachus bhupathi is radically adapted for a subterranean existence. It possesses a bulbous, pear-shaped body covered in smooth, glistening plum-purple skin, accented by a distinct whitish ridge along its snout. Its eyes are miniature and shielded, adapted for dim light, while its small, down-turned mouth houses a specialized grooved tongue engineered to lap up termites directly from subterranean galleries. Its muscular hind limbs feature hard, keratinized spade-like inner metatarsal tubercles that function like shovels, enabling it to burrow backward into compacted soil in seconds.
Behavior and Ecology
Bhupathy’s Purple Frog lives up to three meters deep in moist subterranean soil layers, never emerging to feed on surface prey. Its entire adult life revolves beneath the forest floor until the torrential onset of the northeast monsoon between October and November. During this brief window, adults emerge for just two to three days to mate in torrential seasonal streams. Females lay strings of eggs beneath submerged boulders in fast-flowing water. The resulting tadpoles possess sucker-like oral discs that allow them to cling tightly to algae-coated rocks behind torrential waterfalls without being swept away.
Conservation and Human Impact
Evaluated as Endangered due to its highly localized distribution and specialized breeding requirements, Nasikabatrachus bhupathi is threatened by human alteration of seasonal headwater streams. Construction of check-dams, diversion of water for tea and cardamom estates, and heavy agrochemical runoff degrade fragile breeding torrents. Because the species requires pristine, undisturbed stream beds for its cling-adapted tadpoles to complete development, maintaining natural hydrology and restoring riparian forest buffers in Tamil Nadu is essential.
Interesting Factoid
Bhupathy’s Purple Frog spends almost 363 days of the year buried deep underground, emerging on the surface for less than 48 hours during annual monsoon storms purely to mate in mountain torrents.
Last updated: October 2026