Killifishes and Live-Bearers: Cyprinodontiformes

The World Conservation Union (IUCN) lists ten species of killifishes and live-bearers as Extinct, five as Extinct in the Wild, eighteen as Critically Endangered, twenty as Endangered, twenty-five as Vulnerable, and three species as Near Threatened. Extinct means no longer in existence. Extinct in the Wild means no longer alive except in captivity or through the aid of humans. Critically Endangered means facing an extremely high risk of extinction in the wild. Endangered means facing a very high risk of extinction in the wild. Vulnerable means facing a high risk of extinction in the wild. Near Threatened means likely to become threatened with extinction in the future. The U.S. Fish and Wildlife Service lists fifteen species as Endangered and one species as Threatened. Endangered means in danger of extinction throughout all or a significant portion of its range. Threatened means likely to become endangered in the near future.