Brook Trout (IMAGE) Penn State Caption Populations of wild brook trout, Salvelinus fontinalis -- an economically, socially and ecologically important species of conservation concern -- have declining precipitously throughout the fish's native range in the eastern United States. Credit Penn State College of Agricultural Sciences Usage Restrictions Non commercial use only 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.