Sylvirana Nigrovittata

Fascinating facts about the Sylvirana Nigrovittata

• A 2018 taxonomic overhaul split the black-striped frog into several look-alikes, meaning many older records from India and Bangladesh might actually belong to different species. It reminds us how even common frogs can hide secret lineages awaiting discovery.
• In the misty foothills of northeastern India, these frogs cling to gentle streams up to 800 m above sea level, showing they can thrive far above the low-land swamps most people picture when they think of amphibians. Their altitude range highlights the hidden biodiversity of mid-elevation forests.
• The species prefers the quiet bends of evergreen forest streams, where tadpoles grow in calm water while adults patrol the banks. This niche dependence illustrates how a single waterway can support an entire life cycle of a forest-dwelling amphibian.
• Although it is listed as “not threatened” by the IUCN, loss of the forest canopy above its streams and changes in water flow are eroding its habitat, underscoring that a species can appear secure while its environment silently unravels.
• Found across a sweep of countries, from Bangladesh and Nepal to Vietnam and southern China, the black-spotted stream frog demonstrates how a single amphibian can link a vast mosaic of Asian forests, reminding us that conservation efforts must cross borders to protect its continuous river corridors.

At a glance

About the Sylvirana Nigrovittata

Sylvirana nigrovittata, the black-striped or black-spotted stream frog, is found in northeastern India, Bangladesh, Nepal, southern China, Myanmar, Thailand, Cambodia, Laos, and Vietnam, up to 800 m elevation, occurring in gentle streams in evergreen forest where its tadpoles develop in quiet sections of the water.

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