LEHI — State water quality officials say they're investigating what may have caused dozens of fish to die in the Jordan River in northern Utah County, but they have two early suspicions. Utah Division ...

For decades, officials have worried the fish could wreak disaster on the world’s largest freshwater ecosystem and the ...

A routine night of bowfishing for invasive snakehead on the Bush River took a turn when a group of Harford County fishermen spotted a nearly 4-foot fish, native to southern Gulf States like Texas, ...

The estimated number of wild fish lost to mass die-off in a Cork river has risen from 1,000 to a possible 10,000. Inland Fisheries Ireland, which has been investigating the deaths in the River ...

Streamflows on the Western Slope have plummeted over the last month, sending water managers scrambling to boost flows for endangered fish and ranking it among the driest years in recent history.

Sturgeon were around when dinosaurs roamed the Earth. They are among the oldest living species of fish, earning the moniker ...

CHICAGO—Krystyna Kurth likes to begin her tours of the river cutting past the city’s post-industrial area with a word association game. Kurth, coordinator of conservation action at the Shedd Aquarium, ...