In the natural environment, ginseng and tilapia are never met, because one is a saltwater fish that lives in the ocean; the other is a freshwater fish that lives in rivers and lakes. However, after scientists "combined," the ginseng fish and tilapia happily chased each other in the fish tank. Scientists are making what was previously considered impossible.
Scientists pointed out that people's demand for seafood is increasing. They are looking for ways to use freshwater on land to stock saltwater fish. Industry analyst Howard Johnson said: "All the reports have shown that our natural resources are limited. Fish in the ocean alone are far from meeting our needs. Therefore, the aquaculture industry faces a tremendous opportunity." According to an analysis by the National Marine Fisheries Service of the United States, in 2002, each American consumed nearly 16 pounds of seafood, an increase of 7 percentage points from the previous year. Johnson predicts that by 2020, seafood products will need to increase by 1.1 billion pounds per year to meet people’s growing needs.
Experts at the Institute of Oceanography at the United States Harbour Branch believe that new technologies in aquaculture will help meet people’s demand for seafood. The number of fish caught in ginseng is now strictly limited. In addition to Panax ginseng, researchers are trying to raise flatfish and black sea bass in lighter water, gradually reducing their natural dependence on the salt water environment, so that they can gradually get rid of the traditional saltwater habitat.
New technologies can keep seafood away from expensive prices and give local farmers a chance to expand or change their fate. "If you go to a place like Kansas or Missouri, you will find a fresh fish and shrimp on the table every night," said Kenneth Raleigh, director of the Department of Aquaculture Education at the Institute of Marine Research at the Harbour Branch. It is a matter of extravagance, but newly developed fish stocking techniques can make their food structure more choices besides beef and chicken."
Changing the living environment of some fish - from salty water to fresh water - is just one of the research projects of the tributary of the Oceanic Branch of the Harbour to promote the development of aquaculture. According to the U.S. Department of Agriculture, they are also studying how to breed fish in the wild, which only produce one or two eggs a year. For example, flounders lay their eggs in the winter, but in the greenhouses they can control the temperature and light to induce early spawning of the flounder. Riley said: "In the summer of Florida, the flounder may think that the winter has arrived."
Other technologies that promote aquaculture also include the use of special foods to feed fish. Studies have found that these special foods can make fish grow faster, more nutritious, and have better disease resistance. Johnson said: "In the chicken industry, chickens can grow faster, have more meat, and cost less. Ultimately these goals can be achieved in the aquaculture industry."
Artificial aquaculture can stabilize the fishing industry that is undergoing hard development. In 1995, when the United States issued a fishing ban, the fishing industry was seriously affected. The fishing ban in 1995 severely restricted the number of fish caught in Pangasius as well as some other fish. Bob Jones, executive director of the Southeast Fisheries Association of the United States, said: "These two industries are complementary. The value of Pangasius is very high. We prohibit overfishing because the fish can be revived so that there will be more. More ginseng fish are on the market. According to estimates of the US Department of Agriculture and studies by Johnson, artificially farmed fish will eventually dominate the market. In the past 20 years, the aquaculture industry has increased by 300% and is the fastest growing sector in the United States. Johnson said that by 2020, the aquaculture industry is likely to provide the most important four kinds of seafood: shrimp, squid, tilapia, and squid. Because of the shrinking profit margins, Schumann, the president of the Indian River Aquaculture Association, abandoned his Fulantan citrus forest in 1998 and switched to shrimp farming. In the early 90s of the last century, researchers discovered that shrimp can adapt to the transition from a saltwater environment to a freshwater environment. Schumann’s business transformation is also attributed to this.
At present, there are farms that produce shrimp and prawns throughout the United States, especially in the warm central and western regions as well as in the south. Schumann produces 2,000 pounds of shrimp each year throughout the year. These fresh shrimps are sold mainly to some of the higher resorts and restaurants. Schumann said: "This is a very good deal. It is also good for protecting the environment. It can provide a lot of food. Our family was four generations before me were farmers, so I'm somewhat like to stay a bit The habits in the farm just met my habit."
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