# Schlegel's Frog

> Schlegel's Frog (Chalcorana chalconota). Schlegel's frog once covered stream-frog populations later split into other species; Sumatran and Javan identifications need current taxonomy.

Source: https://panduanhewan.org/en/species/chalcorana-chalconota/ · Updated 1 October 2026 · English · Bahasa Indonesia: https://panduanhewan.org/id/spesies/chalcorana-chalconota/
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**Review status:** This guide was compiled from the listed species sources and observation records; it has not been reviewed by a taxonomic specialist. GBIF records are neither a census nor proof of native range.

## Quick answer

Schlegel's Frog (*Chalcorana chalconota*) is an amphibian in the family Ranidae. In Indonesia, observation records come mainly from West Java, Central Java, Yogyakarta. It is endemic to Indonesia, living naturally only in Java, Bali and southern Sumatra. Diet: insect- and small-invertebrate-eater (insectivore); a carnivore. IUCN Red List status: Least Concern.

| Fact | Value |
|---|---|
| Scientific name | *Chalcorana chalconota* |
| Former scientific name | *Hylarana chalconota*, *Rana chalconota* |
| Indonesian name | Kongkang kolam |
| Group | Amphibians |
| Family | Ranidae |
| Observation records | West Java, Central Java, Yogyakarta |
| Taxonomic group | Anura |
| GBIF records | 1,516 human-observation records, 2016–2026 |
| Data retrieved | 2026-09-23 |
| IUCN status | Least Concern · [IUCN Red List (via GBIF)](https://www.gbif.org/species/10886187) · checked 1 October 2026 |
| Diet type | Carnivore (meat-eater) — insect- and small-invertebrate-eater (insectivore) · [Australian Museum](https://australian.museum/learn/teachers/learning/frog-life-cycle/) |
| Reproduction | Laying eggs (oviparous) · [Australian Museum](https://australian.museum/learn/teachers/learning/frog-life-cycle/) |
| Endemic to Indonesia | Yes — Java, Bali and southern Sumatra · [Ecology Asia](https://www.ecologyasia.com/verts/amphibians/schlegels-frog.htm) |

## Important taxonomic note

GBIF uses Chalcorana chalconota while Amphibian Species of the World treats that name as Hylarana chalconota. The different genus names reflect different taxonomic treatments; field identification still requires character-level review.

Evidence: [Amphibian Species of the World — Hylarana chalconota](https://amphibiansoftheworld.amnh.org/Amphibia/Anura/Ranidae/Hylarana/Hylarana-chalconota)

## What is the Schlegel's Frog?

Schlegel's Frog refers to Chalcorana chalconota, in the genus Chalcorana, family Ranidae, and order Anura. The scientific name follows the accepted taxon in the GBIF Backbone Taxonomy. Common names can vary between places; the scientific name distinguishes this species from relatives.

Evidence: [GBIF Backbone Taxonomy — accepted taxon](https://www.gbif.org/species/10886187)

## What is known about the Schlegel's Frog?

Schlegel's frog once covered stream-frog populations later split into other species; Sumatran and Javan identifications need current taxonomy.

Read that fact alongside the scientific name and species source, not as proof from an unclear photograph. Populations, ages and taxonomic limits can differ; when identification is uncertain, record the broader group.

Evidence: [Amphibian Species of the World — Hylarana chalconota](https://amphibiansoftheworld.amnh.org/Amphibia/Anura/Ranidae/Hylarana/Hylarana-chalconota)

## How many Indonesian records name the Schlegel's Frog?

When checked on 2026-09-23, the GBIF search returned 1,516 human-observation records from Indonesia under this species name for 2016–2026. That is a count of indexed records, not an estimate of population, abundance or unique individuals. Observation effort can vary by location, and the count may change as records are added or identifications revised.

Evidence: [GBIF occurrence search — Indonesia, human observations, 2016–2026](https://api.gbif.org/v1/occurrence/search?country=ID&speciesKey=10886187&basisOfRecord=HUMAN_OBSERVATION&year=2016%2C2026&limit=0&facet=stateProvince&facetLimit=7)

## Where were observations reported?

Place labels appearing in the results include West Java, Central Java, Yogyakarta. They are labels attached to records, not a complete range map or evidence that the species occurs only there. Some labels may be broad or inconsistent. Check the underlying records before using the location information for field decisions.

Evidence: [GBIF occurrence search — Indonesia, human observations, 2016–2026](https://api.gbif.org/v1/occurrence/search?country=ID&speciesKey=10886187&basisOfRecord=HUMAN_OBSERVATION&year=2016%2C2026&limit=0&facet=stateProvince&facetLimit=7)

## How can you observe the Schlegel's Frog?

Observe in place without moving eggs, tadpoles or frogs. Images of the body and habitat, together with date and calls, can help specialists assess an identification; common names do not establish handling safety. A well-documented sighting helps others check the identification without turning one encounter into a conservation-status claim.

## Explore related animals

To explore this group further, compare Schlegel's Frog with Green Paddy Frog, Poisonous Rock Frog, Paddy Field Frog. These links reflect a shared genus, family, order, class or catalogue group; taxonomic proximity does not imply identical habitat needs or conservation status.

## Scientific classification of the Schlegel's Frog

| Rank | Name |
|---|---|
| Kingdom | Animalia |
| Phylum | Chordata |
| Class | Amphibia |
| Order | Anura |
| Family | Ranidae |
| Genus | *Chalcorana* |
| Species | *Chalcorana chalconota* |

Source: [GBIF Backbone Taxonomy](https://www.gbif.org/dataset/d7dddbf4-2cf0-4f39-9b2a-bb099caae36c)

## Common questions about Schlegel's Frog

### What is the scientific name of Schlegel's Frog?

The scientific name of Schlegel's Frog is *Chalcorana chalconota*, in the family Ranidae and the order Anura. In Indonesian it is called Kongkang kolam. A former scientific name still often used: *Hylarana chalconota*, *Rana chalconota*.

### What kind of animal is Schlegel's Frog?

Schlegel's Frog is an amphibian in the family Ranidae. By diet it is a carnivore (meat-eater): a insect- and small-invertebrate-eater (insectivore). It is also endemic to Indonesia.

### Where does Schlegel's Frog live in Indonesia?

Observation records of Schlegel's Frog summarised in this guide mainly come from West Java, Central Java, Yogyakarta. That list is not a complete range map.

Schlegel's Frog is endemic to Indonesia and lives naturally only in Java, Bali and southern Sumatra. Source: [Ecology Asia](https://www.ecologyasia.com/verts/amphibians/schlegels-frog.htm).

### What does Schlegel's Frog eat?

Schlegel's Frog is a insect- and small-invertebrate-eater (insectivore). That makes it a carnivore (meat-eater). Source: [Australian Museum](https://australian.museum/learn/teachers/learning/frog-life-cycle/).

### How does Schlegel's Frog reproduce?

Schlegel's Frog reproduces by laying eggs (oviparous). Source: [Australian Museum](https://australian.museum/learn/teachers/learning/frog-life-cycle/).

### What is the scientific classification of Schlegel's Frog?

Scientific classification of Schlegel's Frog: kingdom Animalia, phylum Chordata, class Amphibia, order Anura, family Ranidae, genus *Chalcorana*, species *Chalcorana chalconota*.

Source: [GBIF Backbone Taxonomy](https://www.gbif.org/dataset/d7dddbf4-2cf0-4f39-9b2a-bb099caae36c), adjusted to the ranks commonly used in school biology.

### Is Schlegel's Frog endangered?

No, according to the global IUCN assessment. On the IUCN Red List, Schlegel's Frog is listed as Least Concern: it does not qualify for a threatened category or for Near Threatened in the global assessment. Source: [IUCN Red List (via GBIF)](https://www.gbif.org/species/10886187), checked 1 October 2026.

This global category is separate from legal protection in Indonesia. To check whether Schlegel's Frog is a protected species, consult the current national list of [protected species](https://panduanhewan.org/en/species/protected/) or contact the local [BKSDA](https://panduanhewan.org/en/bksda-offices/) (natural resources conservation office).

## Sources & references

1. [GBIF Backbone Taxonomy — accepted taxon](https://www.gbif.org/species/10886187)
2. [GBIF occurrence search — Indonesia, human observations, 2016–2026](https://api.gbif.org/v1/occurrence/search?country=ID&speciesKey=10886187&basisOfRecord=HUMAN_OBSERVATION&year=2016%2C2026&limit=0&facet=stateProvince&facetLimit=7)
3. [Amphibian Species of the World — Hylarana chalconota](https://amphibiansoftheworld.amnh.org/Amphibia/Anura/Ranidae/Hylarana/Hylarana-chalconota)
4. [Australian Museum](https://australian.museum/learn/teachers/learning/frog-life-cycle/)
5. [Ecology Asia](https://www.ecologyasia.com/verts/amphibians/schlegels-frog.htm)
6. [GBIF Backbone Taxonomy (GBIF)](https://www.gbif.org/dataset/d7dddbf4-2cf0-4f39-9b2a-bb099caae36c)

## Keep exploring

- [Green Paddy Frog](https://panduanhewan.org/en/species/hylarana-erythraea/)
- [Poisonous Rock Frog](https://panduanhewan.org/en/species/odorrana-hosii/)
- [Paddy Field Frog](https://panduanhewan.org/en/species/fejervarya-limnocharis/)
- [Asian Common Toad](https://panduanhewan.org/en/species/duttaphrynus-melanostictus/)
- [Common Southeast Asian Tree Frog](https://panduanhewan.org/en/species/polypedates-leucomystax/)
- [Hasselt's Toad](https://panduanhewan.org/en/species/leptobrachium-hasseltii/)

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Cite: PanduanHewan. (2026). Schlegel's Frog. PanduanHewan.org. https://panduanhewan.org/en/species/chalcorana-chalconota/