Pete Oxford / Glass frog with eggs visible through skin {Centrolenella sp} Ecuador, South America

Phil Savoie / Glass frog guarding its eggs (Centrolenella fleischmanni) Belize

Phil Savoie / Glass frog parent guarding eggs (Centrolenella fleischmanni) Belize

Doug Wechsler / Glass frog in rainforest understorey, Ecuador

Morley Read / Glass frog (Centrolenidae) tadpoles developing in an egg mass, Cordillera del Condor, Zamora Chinchipe Province, Ecuador. (non-ex)

Morley Read / Glass frog (Centrolenidae) tadpoles developing in an egg mass, Cordillera del Condor, Zamora Chinchipe Province, Ecuador. (non-ex)

Morley Read / Glass frog (Centrolenidae) tadpoles developing in an egg mass, Cordillera del Condor, Zamora Chinchipe Province, Ecuador. (non-ex)

Morley Read / Glass frog (Espadarana) tadpoles developing in an egg mass, Cordillera del Condor, Zamora Chinchipe Province, Ecuador. Endangered. (non-ex)

Morley Read / Glass frog (Espadarana) tadpoles developing in an egg mass, Cordillera del Condor, Zamora Chinchipe Province, Ecuador. Endangered. (non-ex)

Morley Read / Glass frog (Espadarana) tadpoles developing in an egg mass, Cordillera del Condor, Zamora Chinchipe Province, Ecuador. Endangered. (non-ex)

Lucas Bustamante / Minute Glassfrog (Centrolene peristictum) male guarding eggs, Mindo, Pichincha, Ecuador, Vulnerable species.

Lucas Bustamante / Two Yellow-flecked glass frogs / White-spotted cochran frogs (Sachatamia albomaculata) on branch, Canande, Esmeraldas, Ecuador.