“…Hypothesized causes of low survival include competition with non-native fishes, predation by birds, factors related to poor water quality, cyanotoxins, parasites, dietary deficiencies, and overwinter starvation (Martin and Saiki, 1999;Foott and Stone, 2005;Markle and Dunsmoor, 2007;Burdick, 2013;Kent and others, 2014;Burdick and others, 2015;Evans and others, 2016). Lack of recruitment to the adult Cui-ui (Chasmistes cujus) populations endemic to Pyramid Lake, Nevada, was a result of a lack of connectivity between rearing and spawning habitats that lead to a failure to reproduce (Scoppettone and Rissler, 2012). Low survival of early life stages due to predation has been hypothesized as the cause of limited adult recruitment for Razorback suckers (Xyauchen texanus) native to the Colorado River and June suckers (Chasmistes liorus) native to Utah Lake, Utah (Andersen and others, 2006;Marsh and others, 2015).…”