Rivero's Amazon tree frog

Rivero's Amazon tree frog ("Dendropsophus riveroi") is a frog that lives in Ecuador, Colombia, Peru, Bolivia and Brazil. Scientists have seen it between 100 and 350 meters above sea level.
The adult male frog is 19 to 20 mm long from nose to rear end. The adult female frog is 22 to 23 mm long. 
This frog comes in many colors, from brown to yellow to whitish. They often have two or three marks behind each eye.
This frog is named after Juan Rivero, a amphibian scientist from Puerto Rico who helped show that it is its own species.