Bluefin tuna: "FRESH!" |
Why is farmed seafood considered less fresh? Of course, it is against food handling and safety regulations for suppliers of seafood to provide any potentially old or poorly fish for human consumption. Quite often I hear of the public misconception of farmers raising stressed animals, over-using antibiotics, and rearing animals in cramped conditions in fouled water. Having studied aquaculture and biotechnology in Australia, this is definitely not the case. Farmers are very concerned for the well-being of their livestock, and will go to great financial lengths to fund researchers to find the best ways to keep fish calm and happy even during the harvesting process. The belief that farmed produce is less fresh is a a fallacy; there is no difference between flesh quality of wild-caught and farmed seafood, if any, it is the wild-caught seafood that is of lesser quality. And this leads to the next question, why is it that farmed produce is always cheaper? The real reasons farmed seafood in Australia is so cheap is because it is struggling to compete with public misconceptions and the prices set by fisheries that catch their product from the wild.
Orange roughy is a deep sea, long lived fish. They don't become sexually mature until they are between 30-50 yrs old! |
There is also a free iPod app called Australia's Sustainable Seafood Guide compiled by the Australian Marine Conservation Society. For more information on what is sustainable, a good place to first check out is GoodFishBadFish.
Images:
Bluefin tuna image accessed 18.10.2011, URL: http://thewe.cc/thewei/_/images10/valued_life/bluefin-tuna_greenpeace.jpe
Orange roughy image accessed 19.10.2011, URL: http://australianmuseum.net.au/Uploads/Images/3298/255%20Hoplost%20atlanticus%20S07_.jpg
Excellent post! I was wondering what the reason is for not farming particular species of fish? Is it do do with space restrictions (whether they naturally have large territories and fight in captivity), or something else?
ReplyDeleteThanks! There are many reasons that some fish aren't farmed (even highly marketable ones), you've just noted two of them; firstly, the space restrictions (fish like tuna can be 2 m long and they need a big area to move around in) and secondly the aggressiveness of some species to conspecifics is quite intense. The biggest reason is because of life cycles. Many fish have a life cycle that is very difficult to close in captivity, many fish have pelagic and settlement phases of development that are not easy to mimic in a large tank, and the fry would be lost if reared in sea cages because they are so small. Also, diet can be a major factor. Fish-eating fish are pretty inefficient to rear because they cost too much to feed, and what they are being fed (other fish) does not help with their sustainability factor (reducing their marketability).
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