Clown Frog vs Colombian Stubfoot Toad

Atelopus varius compared with Atelopus minutulus

Taxonomic Classification

Rank	Clown Frog	Colombian Stubfoot Toad
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Amphibia (Amphibians)	Amphibia (Amphibians)
Order same	Anura (Frogs & Toads)	Anura (Frogs & Toads)
Family same	Bufonidae	Bufonidae
Genus same	Atelopus	Atelopus
Species	Atelopus varius	Atelopus minutulus

Evolutionary Relationship

Clown Frog and Colombian Stubfoot Toad share a common ancestor at the Genus level: Atelopus.

Conservation Status

Clown Frog

CR — Critically Endangered

Colombian Stubfoot Toad

CR — Critically Endangered

Physical Characteristics

Attribute	Clown Frog	Colombian Stubfoot Toad
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Clown Frog

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Colombian Stubfoot Toad

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 5 distinct biome types spanning the Neotropic and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Colombia. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Clown Frog

The clown frog (Atelopus varius), also known as the harlequin frog or variable harlequin toad, is a small, vibrantly colored true toad in the family Bufonidae native to the premontane and montane rainforests of Costa Rica and Panama. Adults display bold black-and-yellow or black-and-orange aposematic patterns that warn predators of their skin toxins. Males typically measure 27–39 mm in snout-vent length and females slightly larger. The species inhabits fast-flowing streams in humid highland forests at elevations generally between 200 and 1,800 m, where breeding occurs in riparian zones. Atelopus varius was once common throughout its range but has suffered catastrophic population declines since the 1980s, primarily due to the chytrid fungal pathogen Batrachochytrium dendrobatidis (Bd), which has driven mass mortality events in amphibians globally. Additional threats include habitat loss from deforestation and agricultural expansion. The species is listed as Critically Endangered by the IUCN. Conservation programs involving captive breeding and disease-resistant population management are underway in Costa Rica and Panama in collaboration with international zoos.

Colombian Stubfoot Toad

<em>Atelopus minutulus</em>, the Colombian stubfoot toad, is a critically endangered harlequin toad in the family Bufonidae, endemic to Colombia. This species is assessed as Critically Endangered by the IUCN, placing it among the most threatened amphibians in the world. Like many members of the genus <em>Atelopus</em>, it has suffered severe population declines attributed primarily to the lethal chytrid fungus <em>Batrachochytrium dendrobatidis</em>, compounded by habitat destruction and climate change. The species occupies tropical and subtropical moist broadleaf forests, dry broadleaf forests, and grassland and savanna habitats, suggesting broader ecological tolerance than many congeners. Stubfoot toads are characteristically diurnal and are often associated with stream margins in humid forest environments, where males typically call from rocks or vegetation near fast-flowing water. Their bright colouration in some <em>Atelopus</em> species signals toxicity, though the extent of toxicity in <em>A. minutulus</em> is not well established. Conservation efforts for Colombian stubfoot toads include captive breeding programmes and disease-resistance research. Biological traits of this species remain poorly documented in the scientific literature.