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 Primary Category Environmental Toxicology Tags Evolution Conservation Genetics College of Agricultural and Environmental Sciences