In September 2016, the International Union for Conservation of Nature (IUCN) listed 3191 data deficient fish species. 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.
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.
Cartilaginous fishes Chondrichthyes includes sharks, rays, skates, and sawfish. There are 475 species and three subpopulations of cartilaginous fish evaluated as data deficient.
Rays and skates There are 253 species and one subpopulation in the order Rajiformes evaluated as data deficient. Narkids
Eagle rays
Guitarfish species
Whiptail stingrays
Narcinids Species
Subpopulations Apron ray (Discopyge tschudii) (1 subpopulation)
Butterfly rays
Skates
Urotrygonids
Potamotrygonids
Urolophids
Torpedinids
Softnose skates
Anacanthobatidae
Cownose rays
Ground sharks There are 110 species and one subpopulation of ground shark evaluated as data deficient. Requiem sharks Subpopulations Night shark (Carcharhinus signatus) (1 subpopulation)
Houndsharks
Catsharks
Carpet sharks
Squaliformes There are 67 species and one subpopulation in the order Squaliformes evaluated as data deficient. Centrophorids
Species
Subpopulations Gulper shark (Centrophorus granulosus) (1 subpopulation)
Echinorhinids Prickly shark
Squalids
Somniosids
Dalatiids
Etmopterids
Chimaeras There are 20 Chimaera species evaluated as data deficient. Chimaerids
Bullhead sharks
Lampreys
Ray-finned fishes There are 2682 species, 12 subspecies, and one subpopulation of ray-finned fish evaluated as data deficient. Salmoniformes
Species
Subspecies Coregonus sardinella baunti Subpopulations Sockeye salmon (Oncorhynchus nerka) (31 subpopulations)
Silversides
Toothcarps There are 75 species and two subspecies of toothcarp evaluated as data deficient. Aplocheilids
Rivulids
Nothobranchiids
Species
Subspecies Aphyosemion cameronense haasi Aphyosemion celiae winifredae
Poeciliids
Cypriniformes Cypriniformes includes carps, minnows, loaches and relatives. There are 610 species and two subspecies in the order Cypriniformes evaluated as data deficient. Hillstream loaches
True loaches
Cyprinids
Species
Subspecies Osteobrama cotio peninsularis Rhodeus atremius suigensis
Psilorhynchids
Suckers
Bonefishes
Gasterosteiformes
Osmeriformes
Catfishes There are 439 catfish species evaluated as data deficient. Amblycipitids
Heptapterids
Astroblepids
Sisorids
Silurids
Trichomycterids
Loach catfishes
Claroteids
Airbreathing catfishes
Loricariids
Mochokids
Stream catfishes
Ariids
Bagrids
Schilbeids
Callichthyids
Erethistids
Other catfish species
Gonorynchiformes
Batrachoidiformes
Elopiformes
Perciformes There are 786 species and two subspecies in the order Perciformes evaluated as data deficient. Temperate perches
Gouramis
Cichlids
Species
Subspecies Cichlasoma urophthalmum ericymba Pseudocrenilabrus multicolor multicolor
Odontobutidae
Epinephelids
Eleotrids
Gobies
Badids
Sparids
Scombrids
Dragonets
Lutjanids
Sand stargazers
Anabantidae
Sciaenids
Labrisomids
Serranids
Chaenopsids
Combtooth blennies
Microdesmids
Wrasses
Threefin blennies
Haemulids
Apogonids
Ambassids
Acanthurids
Butterflyfishes
Other Perciformes species
Beloniformes
Synbranchiformes
Gymnotiformes
Osteoglossiformes There are 40 species in the order Osteoglossiformes evaluated as data deficient. Mormyrids
Arapaimids Agassiz’s arapaima (Arapaima agassizii) Arapaima (Arapaima gigas) Slender arapaima (Arapaima leptosoma) Mapa arapaima (Arapaima mapae)
Gobiesociformes
Characiformes There are 110 species in the order Characiformes evaluated as data deficient. Alestids
Distichodontids
Characids
Crenuchids
Other Characiformes species
Syngnathiformes Syngnathiformes includes the pipefishes and seahorses. There are 71 species and two subspecies in the order Syngnathiformes evaluated as data deficient. Syngnathids
Species
Subspecies Subtropical-tropical trunk-pouch pipefish (Microphis brachyurus aculeatus) Opossum river pipefish (Microphis brachyurus lineatus)
Centriscids
Sea moths Brick seamoth (Pegasus laternarius) Pegasus tetrabelos Longtail seamoth (Pegasus volitans)
Clupeiformes
Scorpaeniformes There are 57 species and one subspecies in the order Scorpaeniformes evaluated as data deficient. Cottids
Scorpaenids
Liparidae
Other Scorpaeniformes
Species
Subspecies Spiny scorpionfish (Trachyscorpia cristulata echinata)
Ophidiiformes
Tetraodontiformes There are 36 species in the order Tetraodontiformes evaluated as data deficient. Tetraodontids
Filefish species
Ostraciids Island cowfish (Acanthostracion notacanthus)
Porcupinefish species Deepwater burrfish (Allomycterus pilatus)
Triggerfishes Deepwater triggerfish (Rhinecanthus abyssus)
Gadiformes There are 32 species in the order Gadiformes evaluated as data deficient. Merlucciids Merluccius gayi Cortez hake (Merluccius hernandezi)
Grenadiers species
Morids
Lotids Azores rockling (Gaidropsarus granti) Gaidropsarus guttatus
Mullets
Bichirs Polypterus teugelsi
Eels There are 50 eel species evaluated as data deficient. Ophichthids
Congrids
Other eel species
Flatfishes There are 58 species and two subspecies of flatfish evaluated as data deficient. Soleids
Tonguefishes
Paralichthyids
Species
Subspecies Etropus delsmani delsmani Etropus delsmani pacificus
Bothids
Other flatfish species
Anglerfishes
Beryciformes
Stephanoberyciformes
Aulopiformes
Zeiformes Smooth oreo (Pseudocyttus maculatus) John Dory (Zeus faber)
Stomiiformes
Cetomimiformes
Myctophiformes
Saccopharyngiformes
Hagfishes
See also Lists of IUCN Red List data deficient species List of least concern fishes List of near threatened fishes List of vulnerable fishes List of endangered fishes List of critically endangered fishes List of recently extinct fishes Sustainable seafood advisory lists and certification
Notes
References