Research of deep sea fish

Many mysteries which are not solved about deep sea fish exist even now when technology progressed greatly. While research which solves the mystery is done, research whether deep sea fish can be used by life is also performed. I would like to introduce the research this time. From the trawl fishery by a trawl net, a lot of deep sea fish is landed with an aimed high　class fish in many cases. Except for some deep sea fish used as steamed fish paste and so on, many deep sea fish was discarded from there being no market value until now. However, such deep sea fish is eaten in various places in recent years. Research that deep sea fish will be used as new fishing resources has been actively performed after the 1970s. Search of the deep sea fish which can be used as new resources is advanced by the Japanese survey ship. The Fisheries Agency performed the survey of natural resources of the deep sea by a northern sea trawler from 1977 to 1979. A Japanese survey ship which called Shinkai developed the deep sea fishery of every corner of the earth over 20 years from 1970. Many abyssal fish came to be used as edible as a result of these investigations. Therefore, import of deep sea fish and export came to be performed frequently. Research submersibles, such as Shinkai 2000, are also engaged in resources investigation and an ecology elucidation of bathybic fishery fish stocks, such as rockfish sandfish. Many of deep sea fish developed by the above trawler investigations is the kinds inhabiting the seabed. On the other hand, the Hadaka sardines which live to the middle layer of deep sea very mostly attract attention as an energy source supporting increase of global food demand. Since the friend of a Hadaka sardine has very much lipid, he has been considered not to turn to edible. However, having the lipid composition which is not different from a common edible fish has been reported by many kinds. If the total amount of living things of the deep sea fish which sails in the middle layer of deep sea goes up to at least 950 million tons, it is estimated.The method of utilizing these abundant resources that are not exploited is explored in recent years. Swimming deep sea fish is storing lipid in the inside of the body in many cases. However, it was discovered by investigation that there are some which contain wax as oil and fat content in inside. In a human body, since wax was indigestible, it was not turning to eating these fish meat. Sale is forbidden in Japan to the oil fish in which the amount of wax is especially large by Food sanitation law. Research whether the deep sea fish containing many  inside of the body such wax can be used as a certain energy is done. I got interested in this research very much. I would like to take notice of progress of future research.