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 Segmentation (biology), segmented body, and paired jointed appendages. Arthropods form the phylum Arthropoda. They are distinguished by their jointed limbs and Arth ...

, 3,814

Chordata A chordate () is an animal of the phylum Chordata (). All chordates possess, at some point during their larval or adult stages, five synapomorphies, or primary physical characteristics, that distinguish them from all the other taxa. These five ...

, 149

Cnidaria Cnidaria () is a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in Fresh water, freshwater and Marine habitats, marine environments, predominantly the latter. Their distinguishing feature is cnidocyt ...

, 617 Mollusca, 3

Nemertina Nemertea is a phylum of animals also known as ribbon worms or proboscis worms, consisting of 1300 known species. Most ribbon worms are very slim, usually only a few millimeters wide, although a few have relatively short but wide bodies. Many h ...

, 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 exclud ...

, 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 e ...

)

data deficient A data deficient (DD) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as offering insufficient information for a proper assessment of conservation status to be made. This does not necessarily ...

species. ;Lists of data deficient species *Animals **Amphibians —

List of data deficient amphibians As of January 2022, the International Union for Conservation of Nature (IUCN) lists 1193 data deficient amphibian species. 16% of all evaluated amphibian species are listed as data deficient. No subpopulations of amphibians have been evaluated b ...

**Birds — List of data deficient birds **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 defi ...

**Mammals —

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

**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 IUCN ...

*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 subpopulat ...

(9 data deficient species) *Fungi — List of fungi by conservation status (1 data deficient species)

Older lists (IUCN 2009.2)

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

— 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 Caryophylliid ...

— IUCN Red List data deficient species (Nemertina) *

— IUCN Red List data deficient species (Onychophora) *

—

IUCN Red List data deficient species (Protista) , 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 ...

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