In this June 20, 2012, photo Chad Landress, a biologist with the Utah Division of Wildlife Resources, holds a June sucker in Utah. Twenty years ago, June suckers were well on their way to oblivion due to Utahns’ use of Utah Lake as a place to dump pollution and stock with sport fish and other nonnatives. Today, the suckers are coming back in the wake of costly efforts to clean up the lake’s degraded habitat, rid its water of invasive carp, raise suckers at secure refuges and hatcheries, and restore a major delta that is hoped to once again serve as a safe nursery for young fish. (Paul Fraughton/The Salt Lake Tribune via AP)