The recent discovery of sea lamprey in the Potomac River has sparked significant debate. Some believe it is a native species that should ... According to the U.S. Fish and Wildlife Service ...

Other invasive fish species in the state include the flathead catfish, which was first found in the Potomac River in the Williamsport area and has steadily increased in population over the last ...

The Potomac is not the river it was when George Washington ... But the other introduced species aren’t the point; the native fish are, says Dan Simberloff, an ecologist at the University of ...

Sea lampreys are an invasive species initially native to the ... claiming it was ‘the first sea lamprey caught in the Potomac River.’ The fish migrate from the Chesapeake Bay to the freshwater ...

WASHINGTON, April 13. -- "Fresh 'errin'! Fresh 'errin'! 'Ere's your nice Potomac 'errin', just outen the water!" View Full Article in Timesmachine » Advertisement ...

collectively known as “river herring,” which are the types found in the Potomac. Meant to protect the population, the law also has broader aims. Herring are a keystone species, a fish that’s important ...