Cage Fish Farming
Cage farming combines new technology and natural resources to provide high quality fish with the least effort
Fish cages are placed in lakes, bayous, ponds, rivers, or oceans to contain and protect fish until they can be harvested. The method is also called "off-shore cultivation" when the cages are placed in the sea. They can be constructed of a wide variety of components. Fish are stocked in cages, artificially fed, and harvested when they reach market size.
A few advantages of fish farming with cages are that many types of waters can be used (rivers, lakes, filled quarries, etc.), many types of fish can be raised, and fish farming can co-exist with sport fishing and other water uses. Cage farming of fishes in open seas is also gaining popularity.
Today cage farming is receiving more attention by both researchers and commercial producers. Factors such as increasing consumption of fish, some declining wild fish stocks, and a poor farm economy have produced a strong interest in fish production in cages..
Cage farming also offers the farmer a chance to utilize existing water resources which in most cases have only limited use for other purposes.
Why fish farming?
According to the demand, commercial fish farming business allows for large supplies of fish. Catching fish from the wild can’t always fulfill the consumer’s demand. In such cases commercial fish farming can meet up this demand. Fish can be raised in tanks until they are ready for marketing, and they don’t require the extensive capture of wild fish. Thus commercial fish farming helps to preserve natural ecosystems.
Compared to the wild brethren, some farm raised fish species are more nutritious. Fish are usually fed a wide variety of protein and nutrient enriched foods or pellets on commercial fish farms. So farm fish become more healthier than the wild fish. Various types of fish species are available throughout the world. So you can choose your desired species for your fish farming business. Fish are very popular as food around the world. So there is an established fish market, and you don’t have to worry about marketing your products.
Is it effective?
Fish farming is the fastest growing area of animal food production, increasing at a 6.6 percent annual rate from 1970 to 2008, the F.A.O. said in a report, State of World Fisheries and Aquaculture 2010. Over that period, the global per capita supply of farm-raised fish rose to 7.8 kilograms, or 17.2 pounds, from 0.7 kilogram.
Aquaculture now makes up 46 percent of the world’s food-fish supply in volume terms, up from 43 percent in 2006, according to the report, and appeared to have overtaken wild fisheries in dollar value, at $98.4 billion in 2008 compared with $93.9 billion.
Just over 80 percent of all wild fish go for human consumption, according to the report, with the remainder used mainly for fish meal and fish oil and in pharmaceuticals.