Purple Frog (Nasikabatrachus sahyadrensis) lives in underground forest soil across Western Ghats, India. It feeds on termites and insects. Its conservation status is Near Threatened.
Fascinating facts about the Purple Frog
- Purple frogs vanished from science for decades until researchers finally named the adult in 2003, even though their tadpoles were recorded over a century earlier. The adult frog was formally described in October 2003, but the juvenile form of the species had been described earlier in 1917. This gap shows how a hidden, underground life can keep a species out of sight for generations, delaying conservation attention until the adult finally emerged.
- When the monsoon finally draws them out, a single female can lay roughly three thousand eggs in a fast-flowing rock pool, and the hatchlings take about a hundred days to turn into froglets. Around 3,000 eggs are laid and fertilized in a rock pool, and the tadpoles metamorphose after around 100 days. This massive, yet time-limited, reproductive burst is the species' only chance to replenish numbers before they retreat underground for the rest of the year.
- Deforestation is carving away the frog's home: Idukki lost 115 km² of tree cover from 2001-2021, a 3 % drop, and nearly 1 % of its old-growth forest vanished between 2002-2021, while the two known breeding sites shed 4 % of their canopy since 2001. Idukki lost nearly 1% of its old growth forests between 2002 and 2021, according to satellite data, most of which was lost from the region surrounding Munnar. Global Forest Watch also shows the two circled sites lost 4 percent of their tree cover from 2001 through 2014 alone. Shrinking forest patches erase the microhabitats purple frogs need for breeding streams, tightening the squeeze on an already endangered amphibian.
- Males of this species exhibit the unique behavior of calling from under a thin layer of soil.
Sources
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At a glance
RangeWestern Ghats, India
HabitatUnderground forest soil
DietTermites and insects
About the Purple Frog
In the mist-shrouded mountains of the Western Ghats, the elusive purple frog emerges from its subterranean hiding places, its deep, iridescent skin glistening like a gemstone as it navigates the damp, leaf-littered forest floor. With a movements that are at once deliberate and secretive, this enigmatic creature probes the shadows, its stout legs and powerful claws propelling it through the undergrowth with a slow, almost primeval intent. As it pauses to sense its surroundings, the purple frog's very existence seems a poignant reminder of the fragile, hidden worlds that lie just beyond our reach.
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