“…The Topeka shiner Notropis topeka is native to Iowa, Kansas, Minnesota, Missouri, Nebraska, and South Dakota (Lee et al, 1980) and has been federally listed as endangered for two decades (Tabor, 1998). Since being listed interest in Topeka shiners has resulted in numerous studies of their physiology (Adams et al, 2000;Koehle and Adelman, 2007), ecology and natural history (Kerns and Bonneau, 2002;Mammoliti, 2002;Stark et al, 2002;Witte et al, 2009;Campbell et al, 2016;Mosey, 2017), genetics (Bergstrom et al, 1999;Michaels, 2000;Anderson and Sarver, 2008), habitat relationships (Schrank et al, 2001;Wall et al, 2004;Gerken and Paukert, 2013;Bakevich et al, 2013;Fischer et al, 2018), and distributional status (Dahle, 2001;Blausey, 2001;Pasbrig and Lucchesi, 2012;Nagle and Larson, 2014;Bakevich et al, 2015). A recent synthesis of published research and unpublished distributional data for the purposes of characterizing the Topeka shiner's range-wide biological status, referred to as a ''species status assessment'' or ''SSA'' (U.S. Fish and Wildlife Service, 2018a), was used to inform a Recovery Plan (U.S. Fish and Wildlife Service, 2018b), and proposes four future scenarios, ranging from continued decline to significant conservation gains, depending on the intensity and geographic extent of conservation actions taken.…”