AT A GLANCE
Common Name: Resplendent Bush Frog
Scientific Name: Raorchestes resplendens
Category: Amphibians
Subcategory: Anura
Size: Body length: 0.9–1.1 in (2.3–2.8 cm); extremely compact build
Weight: 0.04–0.08 oz (1.2–2.2 g)
Lifespan: Estimated 3–5 years in high montane conditions
Diet: Insectivore (small collembolans, mites, tiny beetles, and alpine gnats)
Habitat: Montane dwarf bamboo clumps, moss cushions, and summit rock fissures
Range: Micro-endemic to the summit plateau of Anamudi Peak in Eravikulam National Park, Kerala, India
Conservation Status: Critically Endangered (IUCN Red List)

Overview

The Resplendent Bush Frog (Raorchestes resplendens) is a stunning, critically endangered amphibian discovered in 2010 on the mist-drenched pinnacle of Anamudi—the highest mountain peak in southern India’s Western Ghats. Boasting an eye-catching bright crimson to vivid orange-red dorsum dotted with glandular tubercles, this tiny jewel of the clouds survives in an ecological island perched nearly 2,700 meters above sea level.

Biology and Physical Characteristics

Raorchestes resplendens is characterized by a compact, robust body with strikingly short limbs and swollen glands across its crown and flanks. Its dorsal skin exhibits a brilliant fiery scarlet hue interspersed with contrasting black or deep purplish marbling. Unlike typical tree frogs that possess large adhesive digital toe discs, this high-altitude specialist has reduced discs and heavily muscled burrowing digits adapted for crawling through dense alpine turf and rocky rhizome mats.

Behavior and Ecology

Rather than living in the trees, the resplendent bush frog leads a largely terrestrial and ground-dwelling lifestyle beneath montane dwarf bamboo (Arundinaria densifolia) and rhododendron root hollows. Like other rhacophorid bush frogs, it bypasses the free-swimming aquatic tadpole stage completely through direct development: females lay nutrient-rich eggs in damp moss cushions, from which fully formed froglets hatch directly.

Conservation and Human Impact

Listed as Critically Endangered by the IUCN, the entire global distribution of Raorchestes resplendens occupies less than three square kilometers on the highest windswept summit of Anamudi. While fully protected within the borders of Eravikulam National Park, its extreme high-altitude specialization makes it exceptionally vulnerable to climate warming, as rising temperatures leave the species with no higher elevation to escape.

Interesting Factoid

The entire world population of the resplendent bush frog lives on a single mountain summit in India, glowing like a living scarlet ember in the freezing, cloud-covered moss fields!

Last updated: October 2026

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