Frog of the Week

Black Spotted Rock Frog (Staurois guttatus)

Black Spotted Rock Frog
photo by Rachel Friedman

Common Name: Black Spotted Rock Frog or Black Spotter Rock Slipper
Scientific Name: Staurois guttatus
Family: Ranidae – True Frog Family
Locations: Brunei, Indonesia, and Malaysia
Female Size:  38.0 – 54.7 mm
Male Size: 34.9 – 37.7 mm 

The Black Spotted Rock Frog lives along rocky, clear, fast moving streams in forests. They are a diurnal species of frog (active during the day). The frogs are able to live amongst the loud streams thanks to their ability to communicate through foot flagging. There are some other species that foot flag but they are one of the only ones where both males and females do the behavior.

The International Union for the Conservation of Nature (IUCN) Red List assesses the Black Spotted Rock Frog as Least Concern for Extinction. They have a good size range and are numerous throughout it. The deforestation in the region is the primary threat to the frog. People are clearing the forests to make room for oil palm plantations, towns, or just to just sell the lumber.

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