Matang Stream Toad

Ansonia leptopus, commonly known as the brown slender toad, Matang stream toad, or cricket-voiced toad, is a remarkable species in the Bufonidae family. These toads are native to Borneo, Sumatra, and Peninsular Malaysia, with a high prevalence in the lowlands of Malaysian Borneo.

Significant sexual dimorphism can be observed in this species. Males typically measure between 30 and 40 mm in snout-vent length, while females can reach up to 55 mm. They are characterized by low warts on their backs and brown or yellow spines under their lower jaws. Male toads also feature dark brown nuptial pads.

Ansonia leptopus thrives in primary rainforests, usually dispersed across the forest floor and among lower vegetation. At night, calling males are frequently seen perched on boulders and rocks along riverbanks. Their breeding process is quite dramatic, occurring in small, clear streams with rocky bottoms. The tadpoles, which are relatively small, are typically found in shallow side pools and among submerged beds of dead leaves.

Unfortunately, these toads face significant threats due to habitat loss, primarily from deforestation. This not only reduces their living space but also leads to siltation in the streams they depend on for breeding.