Dams exacerbate the consequences of climate change on river fish

A potential response of river fish to environmental changes is to colonize new habitats. But what happens when dams and weirs restrict their movement? And are native and alien species similarly affected? Researchers from ...

Fish invasions follow Panama and Suez canal expansions

World maritime trade grows each year, aided by canal waterways that connect oceans and reduce shipping time, energy consumption and carbon emissions. Following recent expansions of the Panama and Suez canals, non-native fish ...

US allows killing sea lions eating at-risk Northwest salmon

U.S. authorities on Friday gave wildlife managers in Washington, Oregon and Idaho permission to start killing hundreds of sea lions in the Columbia River basin in hopes of helping struggling salmon and steelhead trout.

22 Australian freshwater fish on path to extinction

Twenty-two native freshwater fish have been identified as likely to become extinct within the next twenty years, unless there is new conservation action, according to new research.

Asian carp roundup in Kentucky opens new front in battle

Like a slow-motion, underwater cattle drive, wildlife officials in a half-dozen aluminum boats used pulses of electricity and sound on a recent gray morning to herd schools of Asian carp toward 1,000-foot-long (305 meters) ...

Open sores, lower numbers likely not invasive lionfish's end

A new disease has caused open sores that can eat into the muscles of invasive lionfish and appears to have contributed to an abrupt drop in their numbers in the northern Gulf of Mexico, scientists reported Tuesday. But they ...

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