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

Scientists used AI to analyze 10,631 freshwater fish species and found that stable, connected rivers are critical for ...

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

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

A strange, big-eyed "dragonfish" hidden under Antarctic ice for 780,000 years has finally been discovered - and it's already at risk.

A colorful reef fish from the Maldives is the first new-to-science species to be described by a Maldivian scientist. Cirrhilabrus finifenmaa has been named by Ahmed Najeeb, a biologist from the ...