Fresh Water Stickleback (IMAGE) University of British Columbia Caption University of British Columbia researchers say sticklebacks adapted their vision to new freshwater environments in less than 10,000 years. Credit Credit: Thor Veen. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.