Atelopus certus is a species of toad

Toad

A toad is any of a number of species of amphibians in the order Anura characterized by dry, leathery skin , short legs, and snoat-like parotoid glands...

 in the Bufonidae family.
It is endemic to the Darien

Darien

Darien is a masculine name; variants include Darian and Darion. Darien may refer to:-Panama:*Darién Gap, border area between Panama and Colombia*Darién National Park*Darién Province*Gulf of Darién*Santa María la Antigua del Darién, town founded in 1510...

 Region of Eastern Panama , and its type locality is Cerro Sapo, giving it its common name of the Toad Mountain Harlequin Frog.

Its natural habitat

Habitat

* Habitat , a place where a species lives and grows*Human habitat, a place where humans live, work or play** Space habitat, a space station intended as a permanent settlement...

s are subtropical or tropical moist lowland forest

Forest

A forest, also referred to as a wood or the woods, is an area with a high density of trees. As with cities, depending where you are in the world, what is considered a forest may vary significantly in size and have various classification according to how and what of the forest is composed...

s, subtropical or tropical moist montane

Montane

In biogeography, montane is the highland area located below the subalpine zone. Montane regions generally have cooler temperatures and often have higher rainfall than the adjacent lowland regions, and are frequently home to distinct communities of plants and animals.The term "montane" means "of the...

s, and river

River

A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...

s.

It is threatened primarily by the advancing wave of chytridiomycosis

Chytridiomycosis

Chytridiomycosis is an infectious disease of amphibians, caused by the chytrid Batrachochytrium dendrobatidis, a non-hyphal zoosporic fungus. Chytridiomycosis has been linked to dramatic population declines or even extinctions of amphibian species in western North America, Central America, South...

 moving through central America, and secondarily by habitat loss, although much of its range falls with in the Darien National Park, a protected area and world heritage site. Because so many other Atelopus

Atelopus

Atelopus, commonly known as harlequin frogs, is a large genus of true toads from Central and South America, ranging as far north as Costa Rica and as far south as Bolivia. Atelopus are small, generally brightly colored and diurnal. Most species are associated with mid- to high-elevation streams...

 species are in steep declines this amphibian is seen as a priority species for ex-situ conservation. In June 2010, a team of conservation partners working under the banner of the Panama Amphibian Rescue and Conservation Project mounted an expedition to the Darien and brought back a founding population of these frogs to begin an ex-situ conservation program at the Summit Municipal Park near Panama City .