The Department of the Interior, specifically the Bureau of Reclamation's Lower Colorado Regional Office, is seeking qualified contractors to monitor the population of the endangered Razorback Sucker in Lake Mead, AZ-NV. The project involves intensive monitoring tasks such as capturing various life stages of the fish, identifying spawning sites, marking individuals for identification, and collecting biological data, with a contract duration comprising a base year and four one-year options. This initiative is crucial for the conservation of the Razorback Sucker, a historically abundant species in the Colorado River Basin, and aims to provide comprehensive reports on population estimates and health assessments. Interested parties must submit their capability statements by 2:00 PM local time on October 9, 2024, to Colleen Samuels at csamuels@usbr.gov, and should ensure they are registered in the System for Award Management (SAM) prior to submission.