USFWS reclassify the relict darter (Etheostoma chienense) from endangered to threatened under the ESA. The relict darter is a fish species that occupies the Bayou de Chien stream system in western Kentucky. This action is based on a thorough review of the best available scientific and commercial information, which indicates that relict darter is not currently in danger of extinction throughout all or a significant portion of its range, but it is still likely to become so in the foreseeable future. They are also finalizing a rule under section 4(d) of the Act that provides for the conservation of the relict darter. This rule is effective 27 October 2023. POC is Lee Andrews, Field Supervisor, USFWS, Kentucky Ecological Services Field Office, 330 West Broadway, Suite 265, Frankfort, KY 40601; tele 502–695–0468. (Federal Register 27 September 2023 [Rule] Pages 66280-66296)