The Glass Frog

Hyalinobatrachium fleischmanni, A northern glass frog species found in the tropical Americas.


The glass frog, or Centrolenidae, is an amphibian family known for its semi-transparent members. With over 150 documented species, these frogs are found in various environments, ranging from tropical rainforests to mountain forests (Howell). With a size ranging from twenty to thirty millimeters, they are very small and difficult to catch and observe, which is why many species still remain undiscovered. During a long mating season between March and November, frogs will undergo sexual external reproduction to produce 20-30 eggs, which are placed under leaves overhanging bodies of water (Cannatella). These eggs then hatch into the water, becoming tadpoles, until they grow large enough to become a terrestrial frog. The offspring amount, combined with a surprisingly long lifespan of ten to fourteen years, makes glass frog population sizes healthy if left alone. As with all animals living in forests, certain forest-specific species risk extinction due to deforestation. Our carelessness as humans may disrupt entire ecosystems and leave a devastating impact on a few glass frog species. 

Glass frogs have transparent bellies and light-green skin.