### Identification Named in honor of the herpetologist Senga Teruo, *Amolops sengae* is a medium-sized, elegantly streamlined torrent frog. Adults typically reach 35–45mm, with females slightly larger than males. Their dorsal skin is a striking mosaic of olive-green and bronze, peppered with irregular dark chocolate blotches that provide perfect camouflage against mossy river stones. Look for their exceptionally long, slender limbs and "gravity-defying" expanded toe pads—large, heart-shaped discs that allow them to cling to vertical, slick surfaces. Unlike the similar *A. marmoratus*, *A. sengae* features a more granular skin texture and a distinct, pale-colored upper lip stripe that extends toward the arm.
### Habitat & Range This species is a specialist of the high-altitude evergreen forests of the Central Highlands in Vietnam, specifically within the Ngoc Linh mountain range. You won’t find them in stagnant ponds; they are strictly tied to the "splash zone" of fast-flowing montane streams and waterfalls, usually between 1,200 and 1,800 meters in elevation. They thrive where the humidity is perpetual and the water is oxygen-rich.
### Behaviour *Amolops sengae* is a nocturnal sentinel of the rapids. During the day, they tuck into rock crevices or hide behind curtains of falling water. At night, males emerge to perch on wet boulders, emitting high-pitched, bird-like chirps that can be heard over the roar of the current. They are incredibly agile; if startled, they don’t just hop—they perform powerful, acrobatic leaps into the churning whitewater, using the current to sweep them to safety.
### Diet As opportunistic ambush predators, they sit motionless on damp rocks, waiting for the vibration of an insect. Their diet consists primarily of riparian invertebrates, including stoneflies, caddisflies, and small spiders that frequent the water’s edge.
### Fascinating Fact The tadpoles of *Amolops sengae* are true marvels of evolution. To survive in torrential currents that would wash other larvae away, they possess a massive, ventral "sucking disc" on their bellies. This allows them to literally vacuum-seal themselves to smooth rocks, grazing on algae while the full force of a waterfall crashes over their backs!