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In 2024, the Borneo elephant has been listed as Endangered on the IUCN Red List as the population has declined by at least 50% over the last three generations, estimated to be 60–75 years. It is pre-eminently threatened by loss , degradation and fragmentation of habitat.
The Borneo elephant, an Asian elephant subspecies. Sundaland harbours 381 mammal species, [11] of which 173 are endemic to this region. [12] Three of orangutan species, Bornean orangutan (Pongo pygmaeus), Sumatran orangutan (P. abelii) and Tapanuli orangutan (P. tapanuliensis) are listed in the IUCN red lists. [13] [14] [15]
The IUCN also lists ten fish subspecies as endangered. Of the subpopulations of fishes evaluated by the IUCN, 24 species subpopulations have been assessed as endangered. For a species to be considered endangered by the IUCN it must meet certain quantitative criteria which are designed to classify taxa facing "a very high risk of extinction". An ...
Critically endangered (CR) species face an extremely high risk of extinction in the wild. As of July 2017, the International Union for Conservation of Nature (IUCN) listed 1,000 critically endangered fish species, including 87 which are tagged as possibly extinct. [1] [2] Of all evaluated fish species, 3.0% are listed as critically endangered ...
Borneo has own a wide variety of bird species. The geological history of Borneo is a major factor: long isolation of the island, broken during the last Ice age, when Borneo was connected to the continent of Asia, led to a combination of Asian and native species. There are about 420 species of birds and 37 are endemic to Borneo [4] [5]
Animals (kingdom Animalia) — IUCN Red List critically endangered species (Animalia) Amphibians — List of critically endangered amphibians; Birds — List of critically endangered birds; Fish — List of critically endangered fishes; Invertebrates — List of critically endangered invertebrates. Arthropods — List of critically endangered ...
There is still many undiscovered species in Borneo. One of the recent new species discovered in Borneo is the lungless frog, which can fly. The high level of biodiversity will be formed if there is a small variation in environmental conditions and a moderate amount of disturbance. A stable condition is favored by species if compared to unstable ...
See: List of endangered fishes, List of critically endangered fishes. Vulnerable, endangered and critically endangered species are collectively referred to as threatened species by the IUCN. Additionally 3191 fish species (21% of those evaluated) are listed as data deficient, meaning there is insufficient information for a full assessment of ...