List of least concern fishes

Fish species (IUCN, 2025-2)
  • 29,447 extant species have been evaluated
  • 23,955 of those are fully assessed
  • 19,663 are not threatened at present
  • 4,292 to 9,784 are threatened
  • 113 to 268 are extinct or extinct in the wild:
    • 102 extinct (EX) species
    • 11 extinct in the wild (EW)
    • 147 possibly extinct [CR(PE)]
    • 8 possibly extinct in the wild [CR(PEW)]

As of September 2016, the International Union for Conservation of Nature (IUCN) lists 9131 least concern fish species. 60% of all evaluated fish species are listed as least concern. The IUCN also lists 37 fish subspecies as least concern.

Of the subpopulations of fishes evaluated by the IUCN, 44 species subpopulations have been assessed as least concern.

This is a complete list of least concern fish species and subspecies evaluated by the IUCN. Species and subspecies which have least concern subpopulations (or stocks) are indicated.