Steelhead trout, once thriving in Southern California, are declared endangered
Southern California's rivers and creeks once teemed with large, silvery fish that arrived from the ocean and swam upstream to spawn. But today, these fish are seldom seen......»»
Clues from the ice age can help restore Swedish streams
Human intervention has destroyed critical habitats for salmon and trout in Swedish streams. Researchers at Umeå University have discovered crucial clues to help restore the streams to their natural state......»»
Investigating effects of invasive trout on native charr in Kamikochi, Nagano
Globally, salmonids have been widely introduced into freshwater areas for aquaculture and recreational angling. brown trout (Salmo trutta), which are native to Europe, and brook trout (Salvelinus fontinalis), which are native to North America, were i.....»»
Scientists determine how to properly feed rainbow trout
Scientists from the RUDN University and colleagues from Iran have determined the optimal dosage of a popular dietary supplement for rainbow trout. Exceeding it not only negates a positive effect, but can cause harm to the health of the fish. Results.....»»
Thermal refuges help trout beat the heat in hot weather
What do fish do when the water gets too hot?.....»»
"King of Lake Ohrid": the fight to save a Balkan trout
Along the picturesque shores of Lake Ohrid, things have taken on a frantic pace at the Lin Hatchery in Albania's Pogradec, as a team of specialists races to release the final batch of newly spawned trout this season......»»
Researchers find evolutionary adaption in trout of Wyoming"s Wind River Mountains
The lakes in Wyoming's Wind River Mountains historically didn't contain fish, but stocking of trout that began in the early 1900s has created an environment in which hundreds of those lakes now have strong fish populations—some carried on by natura.....»»
Rainbow trout subspecies newly named
The McCloud River redband trout, or O. mykiss calisulat, is newly identified as its own distinct subspecies of rainbow trout in a study from the University of California, Davis. It is the first newly identified subspecies of Pacific trout since 2008.....»»
Biologists make breakthrough in fish mucosal immune system research
Researchers in the Salinas Lab in The University of New Mexico's Department of Biology have discovered an immune structure in the nasal cavities of rainbow trout that scientists previously didn't know existed. The new knowledge will allow fish immuno.....»»
Lagoon dries up as drought grips Peru"s southern Andes
From her home under the baking sun of Peru's southern Andes, Vilma Huamaní can see the small Cconchaccota lagoon, the axis of her community's life. It has been a source of trout, fun for children eager to swim, beauty as flamingos flew from over the.....»»
Mountainous Lesotho finds gold in trout fish farming
It's harvest time in Lejone, a small village nestling in mountains in southern Africa more than two thousand metres above sea level......»»
Warmer stream temperatures in burned-over Oregon watershed didn"t result in fewer trout
The number of trout in a southern Oregon stream system showed no decline one year after a fire burned almost the entire watershed, including riparian zone trees that had helped maintain optimal stream temperatures for the cold-water fish......»»
Biologists address global extinction crisis
Brook trout are disappearing from American streams. Amphibian habitats are changing. Coral species are dying......»»
Mining"s effect on fish warrants better science-based policies
A new paper published in Science Advances synthesizes the impact of metal and coal mines on salmon and trout in northwestern North America, and highlights the need for more complete and transparent science to inform mining policy......»»
"Alternative facts" are cons, and journalists can help quash them, new paper argues
Journalists need not cover both sides of an argument when one side is advancing what experts widely regard as a con, Illinois Institute of Technology John and Mae Calamos Endowed Chair in Philosophy J. D. Trout argues in his latest publication. "Th.....»»
Freshwater mussels can inhibit bacterial diseases
Researchers from the University of Jyväskylä found brown trout better survived a Flavobacterium disease outbreak if the fish had larvae of freshwater pearl mussel in their gills. In another study, duck mussels were observed to filter and remove Fla.....»»
Pelican prefer native fish to sportfish at Utah"s Strawberry Reservoir
American white pelicans who pause their migration at Strawberry Reservoir are filling their bellies with native species like Utah sucker for the most part, leaving cutthroat trout to the human anglers, according to new research published in the Canad.....»»
Researchers explore ways to make hatchery steelhead more like wild fish
Hatchery-raised steelhead trout have offspring that are good at gaining size under hatchery conditions but don't survive as well in streams as steelhead whose parents are wild fish, new research by Oregon State University shows......»»
Warm-water habitat allows cold-water fish to fuel up
New Oregon State University research shows that warm-water habitats can be critically important for the survival of cold-water fish such as trout and salmon......»»
Monkeys go fishing to survive harsh Japanese winters
Snow monkeys living in one of the world's coldest regions survive by 'going fishing' – scooping live animals, including brown trout, out of Japanese rivers and eating them to stay alive, a new study reveals......»»