As reported in this story from The Denver Channel, higher temperatures and algae blooms could be contributing factors to an increase in dead fish around ponds and lakes in the Denver metro area recently. When water temperatures rise, it causes a drop-off in oxygen levels in the water; algae also contributes to the consumption of oxygen.
While most algae is harmless, toxic blue-green algae also poses a threat to kids, pets and livestock. Colorado Department of Public Health and Environment tests came back positive for toxic algae in Prospect Lake in Colorado Springs, Barr Lake in Adams County, Cherry Creek Reservoir in Arapahoe County, and Steamboat Lake in Routt County.
Read more from The Denver Channel.