The Centrolenidae is a family of amphibians that can be found in the rainforests of Central America and also in South America countries such as Brazil, Venezuela and Paraguay. Particularly in the Amazon Forest. They have a very particular characteristic. Their bodies have a transparent abdminal skin, in this way, their internal organs like the heart, the liver, the intestines, the viscera, bones and even eggs can be viewed without any instrument, hence the common name: Glass Frog. The illustration technique used sought to emphasize the striking characteristic skin translucent and glossy color.