List of critically endangered fishes
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. Of all evaluated fish species, 3.0% are listed as critically endangered. The IUCN also lists four fish subspecies as critically endangered. Of the subpopulations of fish evaluated by the IUCN, 20 species subpopulations and one subspecies subpopulation have been assessed as critically endangered. Additionally 3191 fish species (21% of those evaluated) are listed as data deficient, meaning there is insufficient information for a full assessment of conservation status.
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. Of all evaluated fish species, 3.0% are listed as critically endangered. 
The IUCN also lists four fish subspecies as critically endangered.
Of the subpopulations of fish evaluated by the IUCN, 20 species subpopulations and one subspecies subpopulation have been assessed as critically endangered.
Additionally 3191 fish species (21% of those evaluated) are listed as data deficient, meaning there is insufficient information for a full assessment of conservation status. As these species typically have small distributions and/or populations, they are intrinsically likely to be threatened, according to the IUCN. While the category data deficient indicates that no assessment of extinction risk has been made for the taxa, the IUCN notes that it may be appropriate to give them "the same degree of attention as threatened taxa, at least until their status can be assessed".This is a complete list of critically endangered fish species and subspecies evaluated by the IUCN. Species considered possibly extinct by the IUCN are marked as such. Species and subspecies which have critically endangered subpopulations (or stocks) are indicated.

Cartilaginous fishes
Includes sharks, rays, skates, and shovelnose rays. The majority of the order Rhinopristiformes, which includes sawfish, guitarfish, wedgefish, and other shovelnose rays, is considered critically endangered, with 28 of its 64 evaluated species considered critically endangered by the IUCN.

Carchariniformes
Borneo shark (Carcharhinus borneensis)
Pacific smalltail shark (Carcharhinus cerdale)
Pondicherry shark (Carcharhinus hemiodon)
Oceanic whitetip shark (Carcharhinus longimanus)
Lost shark (Carcharhinus obsoletus)
Smalltail shark (Carcharhinus porosus)
Whitefin swellshark (Cephaloscyllium albipinnum)
Reticulated swellshark (Cephaloscyllium fasciatum)
Sarawak pygmy swellshark (Cephaloscyllium sarawakensis)
Indian swellshark (Cephaloscyllium silasi)
Tope (Galeorhinus galeus)
Ganges shark (Glyphus gangeticus)
Whitefin topeshark (Hemitriakis leucoperiptera)
Daggernose shark (Isogomphon oxyrhynchus)
Striped smoothhound (Mustelus fasciatus)
Speckled smoothhound (Mustelus mento)
Narrownose smoothhound (Mustelus schmitti)
Humpback smoothhound (Mustelus whitneyi)
Scalloped bonnethead (Sphyrna corona)
Scalloped hammerhead (Sphyrna lewini)
Scoophead (Sphyrna media)
Great hammerhead (Sphyrna mokarran)
Smalleye hammerhead (Sphyrna tudes)
Spotted houndshark (Triakis maculata)

Lamniformes
Sand tiger shark (Carcharius taurus)

Orectolobiformes
Shorttail nurse shark (Pseudoginglymostoma brevicaudatum)

Squaliformes
Dwarf gulper shark (Centrophorus atromarginatus)

Squatiniformes
Sawback angelshark (Squatina aculeata)
Argentine angelshark (Squatina argentina)
Chilean angelshark (Squatina armata)
Japanese angelshark (Squatina japonica)
Indonesian angelshark (Squatina legnota)
Hidden angelshark (Squatina occulta)
Smoothback angelshark (Squatina oculata)
Angelshark (Squatina squatina)

Rajiformes
Common blue skate
Longnose skate
Bignose fanskate
Flapper skate
Menni's skate
Korean skate
Maltese skate
Spotback skate

Myliobatiformes
Wingfin stingray
Smalltooth stingray
Colares stingray
Smooth stingray
Pakistan whipray
Shorttail whipray
Thorny whipray
Smalleye round ray
Reticulate round ray
Tentacled butterfly ray
Starrynose cowtail ray
Lusitanian cownose ray
Java stingaree
Common eagle ray
Duckbill eagle ray
Shortnose eagle ray

Rhinopristiformes
Largetooth sawfish (Pristis pristis)
Smalltooth sawfish (Pristis pectinata)
Green sawfish (Pristis zijsron)
Giant guitarfish (Glaucostegus typus)
Halavi guitarfish (Glaucostegus halavi)
Bowmouth guitarfish (Rhina ancylostoma)
Smoothback guitarfish (Rhinobatus lionotus)
Spineback guitarfish (Rhinobatos irvinei)
Sharpnose guitarfish (Glaucostegus granulatus)
Stripenose guitarfish (Acroteriobatus variegatus)
Clubnose guitarfish (Glaucostegus thouin)
Widenose guitarfish (Glaucostegus obtusus)
Whitespotted guitarfish (Rhynchobatus djiddensis)
Jimbaran guitarfish (Rhinobatos jimbaraensis)
Brown guitarfish (Rhinobatos schlegeii)
Blackchin guitarfish (Glaucostegus cemiculus)
Bengal guitarfish (Rhinobatus annandalei)
Brazilian guitarfish (Pseudobatus horkelii)
Common guitarfish (Rhinobatos rhinobatos)
Philippine guitarfish (Rhinobatos whitei)
Broadnose wedgefish (Rhynchobatus springeri)
Bottlenose wedgefish (Rhynchobatus australiae)
Smoothnose wedgefish (Rhynchobatus laevis)
African wedgefish (Rhynchobatus luebberti)
Taiwanese wedgefish (Rhynchobatus immaculatus)
Clown wedgefish (Rhynchobatus cooki)
Whitespotted wedgefish (Rhinobatus albomaculatus)
False shark ray (Rhynchorhina mauritaniensis)

Torpediniformes
Red Sea torpedo (Torpedo suessii)
Argentine torpedo (Tetronarce puelcha)Subpopulations

Ray-finned fishes
There are 431 species, four subspecies, four subpopulations of species, and one subpopulations of subspecies of ray-finned fish assessed as critically endangered.

Acipenseriformes
Acipenseriformes includes sturgeons and paddlefishes. There are 17 species and one subpopulation in the order Acipenseriformes assessed as critically endangered.

Sturgeons
Species

Subpopulations

White sturgeon (Acipenser transmontanus) (2 subpopulations)

Salmoniformes
Species

Subpopulations of species

Sockeye salmon (Oncorhynchus nerka) (4 subpopulations)Subpopulations of subspecies

Aral sea trout (Salmo trutta aralensis) (1 subpopulation)

Silversides
Toothcarps
Species

Subspecies

Epiplatys fasciolatus josianae
Ejagham killi (Fundulopanchax gardneri lacustris)

Cypriniformes
Cypriniformes includes carps, minnows, loaches and relatives. There are 145 species, one subspecies, and one subpopulation in the order Cypriniformes assessed as critically endangered.

Hillstream loaches
True loaches
Cyprinids
Species

Subspecies

Rhodeus ocellatus smithiiSubpopulations

Common carp (Cyprinus carpio) (1 subpopulation)

Psilorhynchids
Psilorhynchus tenura

Suckers
June sucker (Chasmistes liorus)
Razorback sucker (Xyrauchen texanus)

Osmeriformes
Includes freshwater smelts and allies.

Catfishes
Perciformes
There are 144 species, one subspecies, and one subpopulation in the order Perciformes assessed as critically endangered.

Cichlids
Species

Subspecies

Chromidotilapia guntheri loennbergii

Percids
Gobies
Other Perciformes
Species

Subpopulations

Atlantic wreckfish (Polyprion americanus) (1 subpopulation)

Characiformes
Other ray-finned fish species
Other fishes
See also

Lists of IUCN Red List critically endangered species
List of least concern fishes
List of near threatened fishes
List of vulnerable fishes
List of endangered fishes
List of recently extinct fishes
List of data deficient fishes
Sustainable seafood advisory lists and certification


== References ==