List of data deficient fishes


In September 2016, the International Union for Conservation of Nature 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 are indicated.

Cartilaginous fishes">Chondrichthyes">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">Rajiformes">Rays and skates

There are 253 species and one subpopulation in the order Rajiformes evaluated as data deficient.

Narcinids">Narcinidae">Narcinids

Species
Subpopulations

[Anacanthobatidae]


Ground sharks">Carcharhiniformes">Ground sharks

There are 110 species and one subpopulation of ground shark evaluated as data deficient.

Hammerhead sharks">Sphyrnidae">Hammerhead sharks

Requiem sharks">Carcharhinidae">Requiem sharks

Species
Subpopulations

[Squaliformes]

There are 67 species and one subpopulation in the order Squaliformes evaluated as data deficient.

Centrophorids">Centrophoridae">Centrophorids

Species
Subpopulations

Echinorhinids">Echinorhinidae">Echinorhinids

Chimaeras">Chimaeriformes">Chimaeras

There are 20 Chimaera species evaluated as data deficient.

Ray-finned fishes">Actinopterygii">Ray-finned fishes

There are 2682 species, 12 subspecies, and one subpopulation of ray-finned fish evaluated as data deficient.

[Salmoniformes]

Species
Subspecies
Subpopulations

Toothcarps">Cyprinodontiformes">Toothcarps

There are 75 species and two subspecies of toothcarp evaluated as data deficient.

Nothobranchiids">Nothobranchiidae">Nothobranchiids

Species
Subspecies

[Cypriniformes]

Cypriniformes includes carps, minnows, loaches and relatives. There are 610 species and two subspecies in the order Cypriniformes evaluated as data deficient.

Cyprinids">Cyprinidae">Cyprinids

Species
Subspecies

Catfishes">Siluriformes">Catfishes

There are 439 catfish species evaluated as data deficient.

Claroteids">Claroteidae">Claroteids


Callichthyids">Callichthyidae">Callichthyids


[Perciformes]

There are 786 species and two subspecies in the order Perciformes evaluated as data deficient.

Cichlids">Cichlidae">Cichlids

Species
Subspecies

Scombrids">Scombridae">Scombrids


Chaenopsids">Chaenopsidae">Chaenopsids


Acanthurids">Acanthuridae">Acanthurids


[Osteoglossiformes]

There are 40 species in the order Osteoglossiformes evaluated as data deficient.

Arapaimids">Arapaimidae">Arapaimids

[Characiformes]

There are 110 species in the order Characiformes evaluated as data deficient.

[Syngnathiformes]

Syngnathiformes includes the pipefishes and seahorses. There are 71 species and two subspecies in the order Syngnathiformes evaluated as data deficient.

Syngnathids">Syngnathidae">Syngnathids

Species
Subspecies

[Scorpaeniformes]

There are 57 species and one subspecies in the order Scorpaeniformes evaluated as data deficient.

Other Scorpaeniformes

Species
Subspecies

[Tetraodontiformes]

There are 36 species in the order Tetraodontiformes evaluated as data deficient.

Ostraciids">Ostraciidae">Ostraciids

Porcupinefish">Diodontidae">Porcupinefish species

Triggerfishes">Balistidae">Triggerfishes

[Gadiformes]

There are 32 species in the order Gadiformes evaluated as data deficient.

Merlucciids">Merlucciidae">Merlucciids

Lotids">Lotidae">Lotids

Bichirs">Polypteriformes">Bichirs

Eels">Anguilliformes">Eels

There are 50 eel species evaluated as data deficient.

Flatfishes">Pleuronectiformes">Flatfishes

There are 58 species and two subspecies of flatfish evaluated as data deficient.

Paralichthyids">Paralichthyidae">Paralichthyids

Species
Subspecies

[Zeiformes]