A dozen fish pulled from a South African river sparked years of debate before being confirmed as a new species.

Whether it's redfin pickerel in the Kennebec River or sturgeon in the Great Lakes, nearly one-third of freshwater fish ...

Researchers identified a new freshwater fish species in South Africa after years of genetic testing and analysis.

Species numbers alone do not fully capture how ecosystems are changing. In a global study, scientists analyzed long-term data ...

Many invasive fish, plus other animals and plants, are ecological nuisances in our state. So the NC Wildlife Resources Commission groups them all together as “Aquatic Nuisance Species,” teaching local ...