Restocking
The return of cod (Gadus morhua) farming to Norway is based on a number of factors but is anchored by the continued efforts of the National Cod Breeding Program, Atle Mortensen, senior scientist at The Norwegian Institute of Food, Fisheries and Aquaculture Research (Nofima), explains during his presentation at Aqua Europe 2018 held in August in Montpellier, France.
Russian company Biosphere-Fish has launched the first stage of a major sterlet (Acipenser ruthenus) hatchery in the Republic of Tatarstan, 62 kilometers east from the city of Kazan, the regional government said in a statement.
Following the Aktau International Summit on August 12, Russian President Vladimir Putin, Iranian President Hassan Rouhani, and leaders of other Caspian states released sturgeon fingerlings to the Caspian Sea. This symbolic gesture was to show the intention of the top officials in the region to enhance efforts to save the sturgeon population from complete extinction.
Russia’s scientist and businessman Rasul Bikmukhametov has launched a state-of-the-art hatchery in a small hangar using several know-how that are not applied anywhere else in Russia, the regional government informed in a statement on its website August 9, citing earlier reports made by the state-owned news media Vesti.
The oyster industry in New Brunswick, Canada, faces a best-of-times, worst-of-times scenario as it moves into the next decade. The Canadian province aims to grow the industry by 10 per cent annually over the next five years but concedes it has limited options for ensuring spat supply.
Russia’s biggest natural gas and oil-extracting companies Gazprom and Novatek have allocated funds to Soba Hatchery under its project to restore the whitefish population in Arctic rivers.
There’s a Winnemem Wintu legend that goes like this: “When we first bubbled out of our sacred spring on Mt. Shasta at the time of creation, we were helpless and unable to speak. It was Salmon, the Nur, who took pity on us and gave us their voice.  In return, we promised to always speak for them.”
A small number of Lost River and shortnose sucker fish were released along the shores of Oregon’s Upper Klamath Lake several weeks ago.
The mussels in the Delaware River Basin are about to get a helping hand.
LP Kuzmitch, a privately-owned company in Eastern Kazakhstan, plans to start producing sturgeon fingerlings in a bid to restore populations of this species in the region.
A rare trout makes its home in the upper reaches of the Gila River of New Mexico and Arizona. The Gila trout (Oncorhynchus gilae) is native only to small headwater streams where it was landlocked thousands of years ago from sea-run Oncorhynchus species.
The freshwater pearl mussel is under threat of extinction across England with most remaining populations under severe decline. Now, a new conservation project by the UK Environment Agency's Kielder Salmon Centre is using sea trout to help the mussels flourish once again.
NOAA Northeast Fisheries Science Center (NEFSC) has started altering stocking times and location to optimize survival of Atlantic salmon smolts migrating down Maine's Narraguagus River into the Gulf of Maine on America's eastern seaboard.
How efforts by government agencies in California contributed to a record salmon return at the Mokelumne River Fish Hatchery

California salmon hatchery managers likely gave a well deserved sigh of relief when record winter rains of 2016/17 ended a five year drought and restored flows to the state’s salmon producing rivers.

But the legacy of those drought years continues to haunt them, as poor adult returns this fall have reduced the egg production goals at Coleman hatchery, the states largest producer of Chinook fry, by half, according to Sacramento area media.

Coleman aims for 12 million smolts to release each spring into Battle creek, a tributary of the Sacramento river. This year, it will be around six million. Poor adult returns to their natal stream, prevented staff from collecting and fertilizing enough eggs.

However, there were plenty of Chinook around the California Central valley last fall, enough to provide a commercial and sports fishery, and other hatcheries met and exceeded their goals, but the Coleman fish just didn’t come straight home. Managers say that giving smolts a ride down river in the spring, in response to past drought conditions, is to blame.

Hatchery staff were able to collect sufficient eggs and sperm to produce fry on target during the drought years. But spring river conditions in 2014 and 2015 were described as “abysmal”. Warm water temperatures and low river levels could harm the freshly released smolts and increase the likely hood of predation, so in those years they were pumped into tanker trucks and driven the 280 miles down stream to acclimatization pens at the mouth of the Sacramento river. This means that they missed the normal “river imprinting” process and that has disoriented the fish that attempted to find their way home this fall.

Historical returns to the Coleman are around 143,000 adult fish. Last fall saw merely 3,000. That was only enough to collect and fertilize about four million eggs. But staff were able to round up some of the missing brethren. Wire tags indicated that many of the strays ended up at Nimbus hatchery on the America River, another branch of the Sacramento, and they gave up another two million eggs for Coleman production.

In an effort to avoid mixing genetic strains, US Fish and Wildlife Service officials declined to bring in fish from other watersheds to increase Coleman numbers.
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