This spotted gar in the Louisiana Bayou is an ancient and native fish species. (Solomon David/Nicholls State University) From art to religion to land use, much of what is deemed valuable in the United ...

Andrew Rypel grew up fishing on Wisconsin's pristine lakes and rivers. With just a worm on his hook, he caught suckers, gar, sunfish and other native fish he never saw in his game fishing magazines.

Exotic fish are a threat to river ecosystems, but what happens when invasive species are native to a territory and have been introduced into waters that are not their original territory? A new study ...