On 29 January 2010, the IUCN Red List of Threatened Species identified 6,702 (5,913 Animalia (1 Annelida, 1,328

Arthropoda Arthropods (, (gen. ποδός)) are invertebrate animals with an exoskeleton, a segmented body, and paired jointed appendages. Arthropods form the phylum Arthropoda. They are distinguished by their jointed limbs and cuticle made of chitin, ...

, 3,814 Chordata, 149

Cnidaria Cnidaria () is a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in freshwater and marine environments, predominantly the latter. Their distinguishing feature is cnidocytes, specialized cells that ...

, 617 Mollusca, 3 Nemertina, 1

Onychophora Onychophora (from grc, ονυχής, , "claws"; and , , "to carry"), commonly known as velvet worms (due to their velvety texture and somewhat wormlike appearance) or more ambiguously as peripatus (after the first described genus, '' Peripatus ...

), 780

Plantae Plants are predominantly photosynthetic eukaryotes of the kingdom Plantae. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi; however, all current definitions of Plantae exclude ...

, 9

Protista A protist () is any eukaryotic organism (that is, an organism whose cells contain a cell nucleus) that is not an animal, plant, or fungus. While it is likely that protists share a common ancestor (the last eukaryotic common ancestor), the exc ...

) data deficient species. ;Lists of data deficient species *Animals **Amphibians — List of data deficient amphibians **Birds —

List of data deficient birds As of December 2020, the International Union for Conservation of Nature (IUCN) lists 52 data deficient avian species. 0.47% of all evaluated avian species are listed as data deficient. No subpopulations of birds have been evaluated by the IUCN. ...

**Fish —

List of data deficient fishes As of September 2016, the International Union for Conservation of Nature (IUCN) lists 3191 data deficient fish species. 21% of all evaluated fish species are listed as data deficient. The IUCN also lists 12 fish subspecies as data deficient. Of ...

**Invertebrates —

List of data deficient invertebrates As of July 2016, the International Union for Conservation of Nature (IUCN) lists 5278 data deficient invertebrate species. 29% of all evaluated invertebrate species are listed as data deficient. The IUCN also lists 57 invertebrate subspecies as ...

***Arthropods — List of data deficient arthropods ****Insects —

List of data deficient insects As of July 2016, the International Union for Conservation of Nature (IUCN) lists 1702 data deficient insect species. 28% of all evaluated insect species are listed as data deficient. No subpopulations of insects have been evaluated by the IUCN. ...

***Molluscs

List of data deficient molluscs As of September 2016, the International Union for Conservation of Nature (IUCN) lists 1988 data deficient mollusc species. 27% of all evaluated mollusc species are listed as data deficient. The IUCN also lists 40 mollusc subspecies as data def ...

**Mammals —

List of data deficient mammals As of September 2016, the International Union for Conservation of Nature (IUCN) lists 783 data deficient Mammalia, mammalian species. 14% of all evaluated mammalian species are listed as data deficient. The IUCN also lists 30 mammalian subspecie ...

**Reptiles —

List of data deficient reptiles As of September 2016, the International Union for Conservation of Nature (IUCN) lists 910 data deficient reptile species. 18% of all evaluated reptile species are listed as data deficient. Of the subpopulations of reptiles evaluated by the IUC ...

*Plants — List data deficient plants *Chromista/Protista —

List of Chromista by conservation status , the International Union for Conservation of Nature (IUCN) has evaluated the conservation status of 15 species within Chromista. The IUCN has not evaluated any protist species other than those in Chromista. No Chromista subspecies or subpopulati ...

(9 data deficient species) *Fungi —

List of fungi by conservation status , the International Union for Conservation of Nature (IUCN) has evaluated the conservation status of 280 fungus species. Previously in the 2017-3 release, the IUCN evaluated the conservation status of 56 fungus species. One subspecies, that of ...

(1 data deficient species)

Older lists (IUCN 2009.2)

* Annelida — IUCN Red List data deficient species (Annelida) * Chordata — IUCN Red List data deficient species (Chordata) *

—

IUCN Red List data deficient species (Cnidaria) On 29 January 2010, the IUCN Red List of Threatened Species identified 149 data deficient species in the Cnidaria phylum ( Animalia kingdom). Anthozoa Actiniaria Edwardsiidae Scleractinia Acroporidae Agariciidae Astrocoeniidae Caryoph ...

* Nemertina — IUCN Red List data deficient species (Nemertina) *

— IUCN Red List data deficient species (Onychophora) *

— IUCN Red List data deficient species (Protista)

References

* IUCN 2009. IUCN Red List of Threatened Species, v2009.2. Source of the above list
online IUCN Red List
Retrieved d.d. 29 January 2010. {{DEFAULTSORT:Red List data deficient species