Wildlifeof Costa Rica
Fleischmann's Glass Frog
Glass Frogs
Photo: Borja Fierro · CC BY 4.0
Hyalinobatrachium fleischmanni
Basic stats
Diet
Small insects such as crickets, moths and flies, spiders, and even smaller frogs
Habitat
Lowland and mid-elevation forest beside fast streams, up to about 2,000m
Range
Southern Mexico to Ecuador
Clutch size
18–30 eggs
Size
Males 19–28mm; females 23–32mm
Fleischmann's glass frog is a small green frog with pale yellowish spots, yellow fingertips and golden, forward-pointing eyes. The skin over the belly is translucent, and a sheet of guanine covers part of the internal organs while leaving others, such as the liver, visible. By day the frogs hide under leaves above water, and when approached they tend to freeze rather than jump. Males call during the rainy season and have a hooked projection on the spine used in contests with other males; females are slightly larger (Wikipedia, general species account).
It lives near fast streams in lowland wet forest, rainforest and higher elevations, and avoids dry areas such as the north-western lowlands. It is the most numerous glass frog in Costa Rica. Females lay eggs on lower branches and the undersides of leaves near flowing water, and the male stands guard over them (Wikipedia, general species account; AmphiBIO, Oliveira et al. 2017).
On this guide it is a target species of Braulio Carrillo.
Quick answers
- What does the Fleischmann's Glass Frog eat?
- Small insects such as crickets, moths and flies, spiders, and even smaller frogs
- What habitat does the Fleischmann's Glass Frog live in?
- Lowland and mid-elevation forest beside fast streams, up to about 2,000m
- Where is the Fleischmann's Glass Frog found?
- Southern Mexico to Ecuador
- How many eggs does the Fleischmann's Glass Frog lay?
- 18–30 eggs
- How big is the Fleischmann's Glass Frog?
- Males 19–28mm; females 23–32mm