This is the Costa Rican variable harlequin toad (
Atelopus varius), also known as the clown frog (in spite of the fact that it is a true toad). They once ranged from Costa Rica to Panama, but are now listed as critically endangered and reduced to a single population in Costa Rica. The variable harlequin toads conspicuous colouring serves as a warning to predators of the toads toxicity.
