A relatively sedentary species, Angel’s Madagascar frog spends the majority of the time perched on a rock or boulder nearby or within a turbulent stream. Nevertheless, when disturbed this species demonstrates impressive energy, leaping from its rocky refuge into the water and skittering along the surface before clambering out onto another emergent object (2). Angel’s Madagascar frog generally commences activity at dusk, or occasionally in the late afternoon, continuing throughout the night (2) (3). During this time it hunts for insects, small freshwater crustaceans and smaller frogs, devouring its prey whole. Although Angel’s Madagascar frog is active throughout the year, its growth slows during the dry season (March to September), when temperatures are lower and food is less abundant (4).
Like most other frogs, the life-cycle of Angel’s Madagascar frog consists of an aquatic, gilled tadpole phase, and an air-breathing adult phase (2) (5). The female lays over 300 eggs, usually within a shallow pool on the surface of a rock, which are fertilised by the male and swell into a gelatinous mass. Once hatched, the tadpoles are believed to remain in the pool or enter the stream, where they eventually metamorphose into juvenile frogs (2). The male Angel’s Madagascar frog reaches sexual maturity at about two years old, around a year earlier than the female. This is a useful reproductive strategy as it allows the females to reach a larger size, where they are capable of producing a greater amount of eggs (4). This species has a relatively long lifespan reaching up to seven years (2).