Similar to the Dendrobatid poison frogs, harlequin toads (Atelopus spp.) are also brightly colored, day-active, and highly toxic. They also comprise one of the most endangered groups of amphibians in the neotropics, with many species listed as Critically Endangered and others presumed extinct in the wild. Aside from habitat loss and threats from introduced species, they appear particularly susceptible to the amphibian-killing chytrid fungus, which has completely wiped out many wild populations. This Atelopus spurrelli is endemic to the Chocóan rainforest of coastal Colombia.