Centrolenidae
Centrolenidae is the family of the glass frogs. There are 34 species in Peru, 4 in the
Madre de Dios department and 7 in the Manu area of which we include 3 species in
this guide. They are green, except a couple of yellow species, with or without some
small spots. Glass frogs are small to medium frogs. The common name comes from
their transparent venter that reveals their internal organs, feature especially distinctive
of the genus Hyalonobatrachium. Toe pads have a truncated shape. Identifying species
of this family can be challenging as they are fairly similar between them; the iris, the
amount of webbing and the visibility of the internal organs are the best features for
identification.
Centrolenidae
They are arboreal and nocturnal. They live in streams and are pretty sensitive to
habitat disturbances, especially water pollution. Glass frogs lay their eggs out of the
water in leaves or rocks. They often show parental care of their clutches of eggs, and
males can fight to death when in mating season. For this purpose males of some genus
of the family have spines in the forelegs.
Cochranella nola