To amend the Endangered Species Act of 1973 to provide for improved precision in the listing, delisting, and downlisting of endangered species and potentially endangered species.

Less Imprecision in Species Treatment Act of 2018 or the LIST Act of 2018 This bill amends the Endangered Species Act of 1973 to revise the process for removing a species from the endangered or threatened species lists. The Department of the Interior or the Department of Commerce, as appropriate, must remove a species from the endangered or threatened species lists if Interior produces or receives substantial scientific or commercial information demonstrating that the species is recovered or that recovery goals set for the species have been met. The publication and notice of a proposed regulation to remove a species from the lists must consist solely of a notice of the removal. The bill establishes a process for removing species from the lists if they were erroneously or wrongfully listed. The bill prohibits a person from submitting a petition to list a species as a threatened or endangered species for 10 years if the person knowingly submitted a petition with information that was inaccurate beyond scientifically reasonable margins of error, fraudulent, or misrepresentative.