The U.S. Fish and Wildlife Service, part of the Department of the Interior, is seeking sources for a potential multiple award Indefinite Delivery Indefinite Quantity (IDIQ) contract for fish marking services in various locations across Oregon, Washington, and Idaho. The procurement aims to engage contractors capable of performing fish marking duties, including fin clipping, coded wire tagging, and other tagging/marking activities, with specific roles outlined for fish markers, assistants, and automated trailer technicians. This initiative is crucial for managing fisheries resources effectively, ensuring the humane treatment of fish, and maintaining high standards of tagging accuracy, as indicated by performance metrics such as a 98% tag retention rate. Interested firms of any size are encouraged to respond by providing their CAGE and Unique Entity ID, along with the locations of interest, to Robert Sung at robert_sung@fws.gov by the specified deadline.