"Farmed fish" refers to fish that are raised and bred in artificial environments such as fish farms or aquaculture facilities. These fish are specifically cultivated for human consumption rather than being caught in the wild.
Full definition
Dartmouth College scientists have discovered that marine microalgae can completely replace the wild fish oil currently used to feed tilapia, the second most
farmed fish in the world and the most widely farmed in the United States.
There are also physical hurdles: The current approved arrangement
for farming the fish entails producing the eggs in an indoor facility in Canada and then shipping them to inland covered tanks in the highlands of Panama.
great info, but would substitute fish oil with plant based omega 3 to avoid toxcicity (and we all know the issues
with farm fished salmon)!..
Both anglers and conservationists are worried
by farmed fish escapees which could disrupt locally adapted traits like timing of return, adult body size, and disease resistance.
The new knowledge will be useful in efforts to develop new vaccines, improve feeding and understand more about what happens when
escaped farmed fish mix with their wild counterparts.
Those products were used to
feed farmed fish or used in agriculture, for purposes such as feeding pigs and chickens.
Also,
most farmed fish are exposed to dose after dose of antibiotics to keep diseases and pests at bay in their crowded underwater pens, much in the way «factory farmed» land animals are drugged to help them cope with cramped, unsanitary conditions.
Please only use wild fish
as farmed fish are not fed their natural diet, and because of that, they contain very low levels of Omega 3 fatty acids and are not good for reducing inflammation.
We are now commercially
farming fish like salmon (and catfish, which are almost completely raised in farms, and fed dog food... appetizing, huh?)
Adding bromophenols which have a shrimp - like flavour — to the food pellets given to
farmed fish makes them tastier, says Lindsay.
Meanwhile, the concentration of mercury and other pollutants in fish like tuna and swordfish remains a health hazard,
while farmed fish are subject to parasites, pesticide runoff, and other contaminants.
The retreat doesn't buy
farmed fish because of the pellets fish are fed but it's also concerned about overfishing.
From a sustainability standpoint, however, it would be preferable to shift the balance back in favor of
farmed fish raised without feeds based on food grains, oilseeds, and protein from other animals.
Since farmed fish often have been bred via selective breeding they have a lower genetic variation than wild fish.
Wild Salmon or fish Oil (beware of
farmed fish containing GMOs, antibiotics, etc. in them), contains linolenic acid, which is broken down into the fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA).
Examples of these differences can be seen glaringly in the nutrition profiles of grass - fed meats vs grain - fed factory farm meat, free range eggs vs factory eggs, wild fish
vs farmed fish, and so on.
The sooner we eat
more farmed fish than wild, the sooner we can turn the majority of the oceans into marine protected areas so they can recover from the devastation of decades of overfishing.
We've reported on farmed Atlantic salmon escaping into wild Pacific salmon habitat, and
how farmed fish threaten marine life and human health.
Farm fishing doesn't exactly have a great reputation for quality, or for environmental friendliness.
Israel's practices in the Jordan Valley are a case in point: settlers monopolise access to water and grow scores of palm trees for dates; and they
also farm fish, grow passion fruit, bananas, etc. — on deprived land where locals lack the ability to farm for themselves.
Some environmentalists and health enthusiasts have long
criticized farmed fish as a threat to natural marine habitats.
If farmed fish escape, they threaten the well - being of native fish species.
As fish aren't raised on root crops (
although farmed fish can have a weird cereal based diet), I suspected all would be well.
For farmed seafood that is not certified under a credible eco-label, require that suppliers provide annual, third - party verified data which clarifies their farm's performance in addressing the key impacts of the species they are farming (see attached Key Impacts of
Commonly Farmed Fish), and make nonproprietary data publicly available.
They suggest two options — either
put farmed fish in fully enclosed pens instead of the open nets currently used.
«Some Norwegian rivers have recorded big numbers of
farmed fish present — as much as 50 per cent.
South
American farmed fish proved somewhat more palatable: PCB and dioxin concentrations were less elevated.
The deterrents involve a series of amplified electronic pulses projected into the water, and were originally developed to stop seals from
stealing farmed fish.
By using closed systems we can look after both wild and
farmed fish even better than we do today.»
Problems with lice and losses can be heavily reduced by
placing farmed fish in closed systems until the fish reach a weight of one kilo.
Compared to their wild - fish counterparts,
farmed fish deliver roughly 20 % less protein, twice as much inflammation - boosting omega 6 fatty acid, fewer omega 3's and nutrients — so I say leave those fish down on the farm.
In fact, wild fish frequently have higher levels of heavy metals in their nervous systems because of bioaccumulation through natural food chain processes,
whereas farmed fish are often fed substances less directly connected to the food chain.
Our food supply has gotten so screwed up that we're even feeding our salmon and
other farmed fish corn and soy... again because of the economics involved.
Though you can also get your Omega 3s from fish, it is increasingly difficult to find wild caught or
sustainably farmed fish that isn't tainted.