List of data deficient fishes
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In September 2016, the International Union for Conservation of Nature (IUCN) listed 3191 data deficient fish species.[1] A data deficient species is one which has been categorized by the IUCN as offering insufficient information for a proper assessment of conservation status to be made. Of all evaluated fish species, 21% are listed as data deficient. The IUCN also lists 12 fish subspecies as data deficient.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/1/18/Circle_frame.svg/220px-Circle_frame.svg.png)
- Extinct in the wild (EW): 6 species
- Critically endangered (CR): 455 species
- Endangered (EN): 643 species
- Vulnerable (VU): 1,245 species
- Near threatened (NT, LR/cd): 548 species
- Least concern (LC): 9,131 species
- Data deficient (DD): 3,191 species
Fish species (IUCN, 2016-2)
- 15,219 extant species have been evaluated
- 12,028 of those are fully assessed[lower-alpha 1]
- 9679 are not threatened at present[lower-alpha 2]
- 2343 to 5534 are threatened[lower-alpha 3]
- 71 to 158 are extinct or extinct in the wild:
- 65 extinct (EX) species[lower-alpha 4]
- 6 extinct in the wild (EW)
- 87 possibly extinct [CR(PE)]
- 0 possibly extinct in the wild [CR(PEW)]
- excludes data deficient evaluations.
Of the subpopulations of fishes evaluated by the IUCN, 34 species subpopulations have been assessed as data deficient.
This is a complete list of data deficient fish species and subspecies evaluated by the IUCN. Species and subspecies which have data deficient subpopulations (or stocks) are indicated.