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Silverstoneia flotator Dunn 1931

Least Concern (IUCN 3.1)
Silverstoneia flotator
Silverstoneia flotator (Rainforest rocket frog)

Common name

Rainforest Rocket Frog



Species description based on Savage (2002). A tiny rocket frog (males to 17 mm, females to 18 mm). Mature males have a swollen middle finger. Throat color in males pale grey throat (white in females).

Silverstoneia flotator Adult 1 Silverstoneia flotator Adult 2


The dorsal surface is dark brown; the coloration darkens to black along the sides. The dorsal and lateral coloration is separated by a complete or partial thin light stripe. The stripe extends from the groin to either midway across the side, or all the way to the eye. The upper surfaces of the arms and legs are usually orangeish. There are no bars on the arms or legs.

Silverstoneia flotator Dorsal 1 Silverstoneia flotator Dorsal 2


The ventral surface is white.

Silverstoneia flotator Ventral 1

Concealed surfaces

The rear surface of the thigh is orangish, borded above by a dark line.

Silverstoneia flotator Concealed surfaces 1

Life history

Breeding season

Males call from leaf litter during the early and later parts of the day (Savage 2002).


The tadpole body is oval-shaped, with a fairly long tail and low tail fins (Savage 2002). The body and tail are dark brown, with some darker pigmentation on the tail (Savage 2002). The ventral surface is pale (Savage 2002). Tadpoles can orient their large mouths dorsally to feed on particles trapped in the surface film of water (Savage 2002).

Ecology behavior and evolution


This species consumes a variety of small arthropods, including large numbers of insect larvae (Toft 1981).


Silverstoneia flotator lives in leaf litter (Savage 2002).


A series of "peets", usually three repeated in a row (Ibanez and Smith 1995, Savage 2002)

Behavior and communication

Males are territorial and will wrestle with other males to defend their territories (Savage 2002). Eggs are laid in leaf litter in a male's territory (Savage 2002). When the eggs hatch, the male transports the tadpoles to nearby streams to continue development (Savage 2002).

Taxonomy and systematics



Dunn 1931


Colostethus flotator, Phyllobates flotator, Phyllobates nubicola flotator

Type locality

Barro Colorado Island, Panama Canal Zone


This form likely represents a complex of a number of species.

Habitat and distribution


Lowland forest to 865 m.


Costa Rica, Panama


Silverstoneia flotator distribution
Distrubution map (IUCN)


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Additional resources

Audio Files

Vocalization of Silverstoneia flotator