Skip to main content

Rio Pescado Stubfoot Toad

Atelopus balios

Hope is alive

Scientists thought this toad was extinct because of habitat loss and disease. During an expedition, however, a small surviving population was found in Ecuador.

Our joint effort

The Saint Louis Zoo collaborates with Fundacion Jambatu in Ecuador, supporting important expeditions, research and conservation initiatives for Ecuadorian amphibians, such as Atelopus balios.

Threat Level

  • Unknown
  • Common
  • Near Threatened
  • Threatened
  • Endangered
  • Critically Endangered
  • Extinct in the Wild

Critically Endangered

The Rio Pescado Stubfoot Toad faces an extremely high risk of extinction in the wild.


Ecuadorian mountain range: Guayas, Axuay and Canar


Humid tropical forest and humid piedmont forest

Find this animal in Historic Hill


Historic Hill

Historic Hill is a lovely stroll through one of the oldest parts of the Saint Louis Zoo. From the 1904 World’s Fair Flight Cage to the Spanish architectural flavor of the 1920s in the Bird House, Primate House and Herpetarium to the finishing touches of our thoroughly modern exhibits, this area of the Zoo has a unique ambiance and a nostalgic history that make it a great destination.

Explore Historic Hill