Fish farming

mesh sizes used in fishing nets have decreased, allowing smaller and smaller fish to be caught. Many of these are too small to be used as food, so they are crushed to be made into either animal food or fertiliser. Fishing using nets is indiscriminate. Any fish which get in the way of the net will be caught in it if they are too big to get through the mesh. For every one tonne of prawns caught, three tonnes of other fish are killed and thrown away. 20,000 porpoises die each year in the nets of…

Invasive species, also called nature’s invaders, are a species that is not native to the environment it now lives in and is harmful to the ecosystem of that environment. They can be there due to a natural phenomenon, such as a flood, but more likely they were brought there by humans. Therefore, humans play a huge role in creating and controlling invasive species. An invasive species is able to cause the extinction of the native plants and animals, they multiply quickly and take a lot of the…

saltwater fish to households and aquariums all over the world. Although it is relatively simple to buy a few fish at the pet store, most people are not questioning where their new pets originate from and what kind of process their fish, if they are not bred in the United States, must endure before they are bought by the local pet store or a wholesale shop. This ignorance has allowed the marine aquarium trade to monopolize the fish trade, whether they are freshwater or saltwater fish, with…

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Salmon fishing has always been a semi-reliant source of food for natives in all parts of Alaska for centuries. The prosperity of the salmon in these areas has been necessary to the survival and prosperity of Alaska 's ancient and current inhabitants. The debate on salmon in this reason is often surrounding two main questions: Why are the salmon populations flourishing, and why are they not in other areas of the united states. These questions and more can be answered not by looking at current…

The increase in ocean acidification affects humans because of coral degradation. When coal dies or is damaged, the animal populations that rely upon reefs can become vastly affected. Fish, for example, are largely reliant upon coral, some eat it and others like the clownfish live within it. When coral reefs suffer, so do populations of marine organisms, and by extension, human that able to feed themselves, and make a living off of fishing…

the already struggling underwater world of the world’s oceans. Ninety percent of large predatory fish, including tuna, swordfish, and sharks are now gone from our oceans and ninety percent of large whales and sixty percent of the smaller species are also now gone from estuaries and coastal waters. A study done by the Dalhousie, University of Canada projects that by 2048 all of the species we fish today will be extinct (“How Dire Is Overfishing?”). Overfishing has become a huge threat not only…

doing so would be just as beneficial to captive fish. Fish are a hugely exploited research model as millions of tons of fish are farmed across the UK. Despite the massive commercial production occurring, inadequate research has been done on improving fish welfare in stressful situations. The large growth of the aquaculture industry should be synonymous with research about how to remedy production problems and facilitate humane treatment. In captivity, fish tanks are relatively under-stimulating…

As we crest the hill we look down on our city covered in thick fog. The sun breaks the horizon filling the world with warm morning light. As we reach the lake the sound of frogs and waterfowl echo through the morning air. We fish for a solid 4 hours catching a total of 20 fish. As we move spots the sound of a truck stops us in our tracks we turn around to see a green and yellow lights engulfed in dust speeding towards us. My friend runs I put down my rod and wait for the punishment. For some…

of Canada studied the production trends of the fishing industry and the decline it has had over the span of four years. This studied showed that in 2004, the Maritime district of Canada had produced 60,789 tonnes of fish and by 2008 this number had dropped down to 40,485 tonnes of fish. This is a prime example of the progressive decay of productivity for ocean based commerce that hails true across the entire…