True frogs is the common name for the frog family Ranidae. They have the widest distribution of any frog family. They are abundant throughout most of the world, occurring on all continents except Antarctica. The true frogs are present in North America, northern South America, Europe, Africa, and Asia. The Asian range extends across the East Indies to New Guinea and a single species, the Australian wood frog, has spread into the far north of Australia.
Osmoconformers are marine organisms that maintain an internal environment which is isotonic to their external environment. This means that the osmotic pressure of the organism's cells is equal to the osmotic pressure of their surrounding environment. By minimizing the osmotic gradient, this subsequently minimizes the net influx and efflux of water into and out of cells. Even though osmoconformers have an internal environment that is isosmotic to their external environment, the types of ions in the two environments differ greatly in order to allow critical biological functions to occur.
Fejervarya is a genus of frogs in the family Dicroglossidae found in Asia. First proposed in 1915 by István József Bolkay, a Hungarian naturalist, the genus did not see widespread adoption at first. As late as the 1990s it was generally included in Rana, but more recent studies have confirmed its distinctness.
Euryhaline organisms are able to adapt to a wide range of salinities. An example of a euryhaline fish is the short-finned molly, Poecilia sphenops, which can live in fresh water, brackish water, or salt water.
Fejervarya limnocharis is a species of frog found in South East Asia and parts of Indochina. It is known under many common names, including Boie's wart frog, rice field frog, and Asian grass frog. Molecular studies of the species complex suggest that there may be multiple species involved.
Hose's frog is a true frog species with a wide range in Southeast Asia. This species was named after zoologist Charles Hose.
Leptolalax hamidi is a frog species in the family Megophryidae. It is endemic to Borneo, where it can be found both in western Sarawak, Malaysia, and Kalimantan, Indonesia. Its natural habitats are tropical moist lowland hilly forests and rivers. It is threatened by habitat loss (logging).
Fejervarya iskandari is a species of frog that is endemic to Java, Indonesia. It is named in honor of Djoko Iskandar, an Indonesian herpetologist. It has been recorded in Bandung and Sukabumi, West Java.
The fanged river frog, Javan giant frog, Malaya wart frog, or stone creek frog is a species of frog in the family Dicroglossidae endemic to Sumatra and Java, Indonesia. Records from other regions are probably caused by misidentifying other species such as Limnonectes blythii as this species.
Limnonectes paramacrodon is a species of frog in the family Dicroglossidae. It is found in Malay Peninsula, Borneo, and Natuna Besar. Its natural habitats are lowland swamp forest areas with small rivers and streams. It is becoming rare due to habitat loss.
The blue-spotted tree frog is a species of frog in the family Rhacophoridae. It is found in Indonesia, Malaysia, Singapore, Thailand, and Vietnam, and possibly Brunei and Myanmar.
The harlequin tree frog is a species of frog in the family Rhacophoridae found in Brunei, Indonesia, Malaysia, Thailand, and the Philippines. Its natural habitats are subtropical or tropical moist lowland forest, subtropical or tropical moist montane forest, freshwater marshes, and intermittent freshwater marshes. It is threatened by habitat loss.
Djoko Tjahjono Iskandar is an Indonesian herpetologist who studies the amphibians of Southeast Asia and Australasia. He is a professor of biosystematics and ecology at Bandung Institute of Technology in West Java, Indonesia.
Pulchrana baramica, the Baram River frog, brown marsh frog, or masked rough-sided frog, is a species of "true frog", family Ranidae. It is found in the Malay Peninsula, including the extreme south Thailand, Peninsular Malaysia, and Singapore, and in the Malay Archipelago, including Borneo, and the Indonesian islands Java, Sumatra, and Bangka Island. Its type locality is the Baram River in Sarawak, Malaysia, giving it one of its common names. Its natural habitats are tropical moist lowland forests and swamps. It is not considered threatened by the IUCN.
Chalcorana labialis, also known as the white-lipped frog, is a species of "true frog" in the family Ranidae. As currently known, it is endemic to Peninsular Malaysia, although it might also occur in Singapore. Molecular data suggest presence of three distinct lineages in the same area, one of which is not closely related to Chalcorana labialis and which could represent an unnamed species.
Chalcorana megalonesa is a species of true frog in the family Ranidae, the "true frogs". It is endemic to Borneo and is known from both Malaysia and Indonesia (Kalimantan). It was split off from Rana chalconota in 2009 by Robert Inger and colleagues, along with a number of other species. Common name large white-lipped frog has been coined for it.
Chalcorana parvaccola is a species of "true frog" in the family Ranidae. It is endemic to Sumatra, Indonesia. It was split off from Chalcorana chalconota by Robert Inger and colleagues in 2009, along with a number of other species. The specific name parvaccola is derived from Latin parvus meaning small and accola meaning neighbor, and refers to this species being smaller than its "neighbor", the related Sumatran species Chalcorana rufipes.
Chalcorana raniceps, also known as the copper-cheeked frog, white-lipped frog, or Peters' Malaysian frog, is a species of "true frog" in the family Ranidae. It is endemic to Borneo, including Brunei Darussalam, Kalimantan (Indonesia), Sabah and Sarawak (Malaysia), although it is likely to occur more widely. Previously mixed with Chalcorana chalconota and believed to have much wider distribution, its range was delimited to Borneo in the revision of "Rana chalconota" complex by Robert Inger and colleagues in 2009.
Chalcorana rufipes is a species of "true frog" in the family Ranidae. It is endemic to Sumatra, Indonesia. It was split off from Chalcorana chalconota by Robert Inger and colleagues in 2009, along with a number of other species. The specific name rufipes is derived from Latin rufus meaning reddish and pes meaning foot, in reference to the reddish tinge on the underside of the pedal webbing in life.
