Invasive "Walking" Fish Not Wreaking Havoc Yet, Scientists Say
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Fears about the impact of the alien snakehead, or "Frankenfish," on native ecosystems appear unfounded, experts say, though much about the fish remains a mystery.
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A new test could help scientists determine more quickly whether chinook salmon in the Klamath River are infected with a potentially deadly parasite.
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By Randolph E. Schmid THE ASSOCIATED PRESS  SAN FRANCISCO -- With declining catches close to shore, commercial fishing is turning to deeper waters, threatening species that live in the cold and gloom of the deep oceans, according to researchers.
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A changing climate is forcing some of Britain's less heralded marine lifeforms to move, research shows.
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Research shows piranhas are much less aggressive than previously thought, scientists in the UK announce.
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By SUE LINDSEY  ROANOKE, Va. - With spring approaching, Virginia scientists are planning a more comprehensive attack to find the cause of the mysterious fish kills in the Shenandoah River and its tributaries.
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Scientists baffled by massive springtime fish kills on the Shenandoah River over several years now have additional confusing information: several hundred dead fish in December.
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Even with the big winds from the week's cold front keeping many boats ashore, there is a sense that the roundup just before the fall migration is about to begin. That means lots of fattened fish -- stripers and bluefish mainly -- are on the move and doing their best to load up on food before the 1,000-mile swim south. ...
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Eighteen prominent scientists and researchers say there is no question that sea lice from fish farms are lethal to wild salmon, no evidence to the contrary and a need for greater protection.
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Plans to directly divert flows from the Rio Grande near Santa Fe shouldn't harm the endangered silvery minnow or cause other serious harm to the environment, says an analysis released this week by the U.S. Bureau of Land Management.
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By Anna King, Tri-City Herald, Kennewick, Wash.  Sep. 23--NACHES -- It's no easy job to keep tiny fish out of irrigation ditches and on their migratory path to the ocean.   Especially when small salmon really like slower moving waterways that offer plentiful bugs and hiding places.
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By Rex Springston and Peter Hardin, Richmond Times-Dispatch  Feb. 12--Bigger dead zones in the Chesapeake Bay. Weed-infested forests. Sick fish.   This is scientist Roger Mann's vision of a Virginia afflicted by global warming.   Stressed, dying trees. Forest fires.
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Despite their fearsome reputation, piranhas are wimps that gather in large shoals to protect themselves from predators, scientists said on Monday.
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By Terry Ganey, Columbia Daily Tribune, Mo.  Sep. 18--A fish that's becoming a growing problem in Midwest rivers might end up being fed to sea lions and penguins in zoos if a pilot project successfully develops.
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By PETER B. LORD  An expert on invasive species in marine waters will give the first lecture this year in the 2006-2007 Mark D. Gould Memorial Lecture Series sponsored by the Rhode Island Natural History Survey.
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Evolutionary biologists have long theorized that the pace of evolution quickens when a species faces great environmental stress. This idea, of course, is a tough one to âprove,â but we can see examples of it all around us. Just look at the IT security industry, where something akin to drastic environmental change is happening right now: Organized cybercrime groups are punching truck-size holes in enterprise security defenses as regulators, shareholders, and attorneys general are putting pressure on companies to lock down sensitive data. The pressure for change will make this weekâs RSA Security Conference in San Francisco less an industry shindig than a live experiment in evolutionary biology. So walk quietly and keep your field glasses handy to spot some exotic new species in these areas:
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By SUE LINDSEY  ROANOKE, Va. - Scientists baffled by massive springtime fish kills on the Shenandoah River over several years now have additional confusing information: several hundred dead fish in December.