Atlantic killifish contributed key adaptive genetic variation to the Gulf killifish, which amounted to an evolutionary rescue from toxic pollutants. (Andrew Whitehead/UC Davis) An Evolutionary Rescue in Polluted Waters May 02, 2019 How Genetics, Resources and a Long-Distant Relative Helped One Lucky Fish Species Adapt to Extreme Pollution Read more in UC Davis News Tags Evolution Conservation Genetics College of Agricultural and Environmental Sciences