Ansonia is a genus of true toads found in south India, northern Thailand, Malay Peninsula, Tioman Island, Borneo, and Mindanao (Philippines). These small forest species spawn in streams and have torrent-adapted tadpoles. Common name stream toads has been coined for the genus, although individual species are also being referred to as slender toads.
Ansonia fuliginea, the North Borneo stream toad or North Borneo slender toad, is a species of toad in the family Bufonidae. It is endemic to Mount Kinabalu in Sabah, Malaysian Borneo.
Ansonia guibei is a species of toad in the family Bufonidae. It is endemic to northwestern Sabah in Malaysian Borneo. The specific name guibei honors Jean Guibé, a French zoologist and herpetologist. Common names Mesilau toad and Mesilau stream toad have been coined for it.
Ansonia hanitschi is a species of toad in the family Bufonidae. It is endemic to mountains of Borneo and found in both Malaysia and Indonesia . Its natural habitats are submontane and montane forests. It inhabits the forest floor. Breeding takes place in clear, rocky mountain streams. It is threatened by habitat loss.
Ansonia inthanon is a species of toad in the family Bufonidae.
Ansonia leptopus is a species of toad in the family Bufonidae. It is known from a few lowland localities in Borneo, Sumatra (Indonesia), and Peninsular Malaysia; it is reported as common in lowland Malaysian Borneo. Its presence in Peninsular Malaysia is uncertain. Its common names are brown slender toad, Matang stream toad, and cricket-voiced toad.
Ansonia longidigita is a species of toad in the family Bufonidae. It is endemic to northern and western Borneo in Sabah and Sarawak (Malaysia) and in Brunei.
Ansonia minuta is a species of toad in the family Bufonidae, described from the forests of Sarawak in 1960. It is known by a number of common names: tiny stream toad, dwarf slender toad, and minute slender toad. It is endemic to Borneo and occurs in tropical moist lowland forests. It is threatened by habitat loss.
Ansonia penangensis is a species of toad in the family Bufonidae. It is endemic to Penang Island, Malaysia. Records from elsewhere represent other species; the mainland records are referable to Ansonia malayana and Ansonia jeetsukumarani.
Ansonia spinulifer, also known as spiny slender toad or Kina Balu stream toad, is a species of true toad in the family Bufonidae. It is found in Sarawak and Sabah, northern Borneo (Malaysia), and presumably also in Kalimantan on the Indonesian part of the island.
Ansonia tiomanica is a species of toad in the family Bufonidae. It is endemic to Tioman Island, off the east coast of Peninsular Malaysia.
Atelopus balios, the Rio Pescado stubfoot toad, is a species of toad in the family Bufonidae. It is endemic to southwestern Ecuador, with records from Pacific lowlands in Azuay, Cañar, and Guayas Provinces. It is a rare species that was already suspected to be extinct, but a single specimen was discovered in 2011 by a team from Conservation International during a hunt for missing amphibians. The decline in amphibian populations is well documented. The Atelopus balios is Critically Endangered as a result of the widespread amphibian Chytridiomycosis fungus that has decimated other amphibian populations. There are only 10 known findings of the tadpole, Atelopus balios.
Ingerophrynus parvus is a species of toad in the family Bufonidae. It is found in southern Myanmar, southwestern Thailand, southwestern Cambodia, Peninsular Malaysia, and Java and Sumatra (Indonesia). Its natural habitats are primary and regenerating rainforests where it is found inhabiting streams. Breeding takes place in pools and slow-moving streams. It is common in the mainland but uncommon in Indonesia.
Ingerophrynus quadriporcatus is a species of toad in the family Bufonidae. Its common names are long-glanded toad, four-ridged toad and greater Malacca toad. It is found in Peninsular Malaysia, Singapore, Borneo, Sumatra, and the Natuna Islands. Its natural habitats are swamp forests, but it has also been found on rubber plantations. It breeds in standing water.
Rentapia hosii, also known as the Boulenger's Asian tree toad, common tree toad, tree toad, House's tree toad (sic), Malayan brown toad, brown tree toad, or Asian yellow-spotted climbing toad, is a species of toad in the family Bufonidae. It is found in the Malay Peninsula, Borneo, and Sumatra (Indonesia).
Ansonia endauensis is a species of toads in the family Bufonidae. It is endemic to the Malay Peninsula and only known from the Endau-Rompin National Park in southern Peninsular Malaysia.
Ansonia kraensis is a species of toads in the family Bufonidae. It is found on the Kra Isthmus, Thailand. It is morphologically similar to Ansonia malayana from Malaysia, but differs from it in ventral coloration and larval morphology. The exact threats are unknown but are likely forest loss for logging and agricultural expansion.
Ansonia jeetsukumarani is a species of toads in the family Bufonidae. It is endemic to Peninsular Malaysia and known from its type locality, Fraser's Hill, and from Sungai Pergau. It is named in honour of Jeet Sukumaran, a biologist who has worked with Malaysian amphibians.
Ansonia latirostra is a species of toads in the family Bufonidae. It is endemic to Peninsular Malaysia and only known from two sites in the Pahang state, one near Sungai Lembing and another one near Mount Benom. It likely occurs more widely.
Rentapia flavomaculata, also known as the yellow-spotted tree toad, is a species of toad in the family Bufonidae. It is endemic to the Malay Peninsula. Before being described as a distinct species in 2020, it was confused with Rentapia hosii.
