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Wildlife conservation
Fish preservation is the method of increasing the shelf life of fish and other fish products by applying the principles of different branches of science in order to keep the fish, after it has landed, in a condition wholesome and fit for human consumption. [1][2] Ancient methods of preserving fish included drying, salting, pickling and smoking.
Sustainable fishery
Fish hatcheries are a popular remedy that are successful in the short term. However, they may just be masking a problem instead of getting to the root of it. Other methods of conservation may include limiting or eliminating harvests of the run, protecting water quality or reducing water extraction for human consumption, and protecting the habitat.
Marine conservation
Jack mackerel caught by a Chilean purse seiner Fishing down the food web. Overfishing is the removal of a species of fish (i.e. fishing) from a body of water at a rate greater than that the species can replenish its population naturally (i.e. the overexploitation of the fishery's existing fish stock), resulting in the species becoming increasingly underpopulated in that area.
Fisheries management
Overfishing - Wikipedia ... Overfishing