What term is used for species identified as threatened or endangered but not yet formally listed?

The term for species identified as threatened or endangered but not yet formally listed is "candidate species." This classification is used in conservation biology and environmental policy to refer to those species that have been recognized as needing protection due to their declining populations or potential extinction risks. While these species are not officially listed under the Endangered Species Act (ESA) or similar laws, they are under consideration for future protection measures.

This status underscores the importance of monitoring and research while also highlighting that conservation efforts may be necessary even before official listings occur. By categorizing species as candidate species, agencies can prioritize them for further study and potential protective actions, facilitating timely conservation interventions.