List of data deficient fishes

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.

This is a complete list of data deficient fish species and subspecies evaluated by the IUCN.

There are 475 species and three subpopulations of cartilaginous fish evaluated as data deficient.

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

Species Subspecies Cypriniformes includes carps, minnows, loaches and relatives.

6 extinct in the wild fish species (0.04%) 455 critically endangered fish species (3.0%) 643 endangered fish species (4.2%) 1245 vulnerable fish species (8.2%) 548 near threatened fish species (3.6%) 9131 least concern fish species (60%) 3191 data deficient fish species (21%)