Most of the cod fillets and fillets on the market are fine-scaled strong cod, not traditional cod. Traditional cod refers to Atlantic cod, Greenland cod and Pacific cod belonging to the genus Cod, and other cod can barely be called cod, such as blue cod belonging to the genus Blue cod and Norwegian narrow cod belonging to the genus Cod.
Extended data
Thirty or forty yuan of "people-friendly cod", the varieties are fine-scale strong cod, yellow-line narrow cod and long-headed cod; High-end "silver cod" includes leatherhead Antarctic fish, small canine Antarctic fish and naked fish.
According to Dr. Wu Shan from the Laboratory of Species Resources Detection and Identification of Zhejiang Institute of Inspection and Quarantine, they are not real cod according to the biological decomposition. "There are three kinds of cod in a narrow sense, Pacific cod, Atlantic cod and Greenland cod. Only these three species are the real cod. "
True and false species
The market including silver cod, water cod, dragon cod and oily fish are not pure cod. Silver cod, alias black cod and blue cod. But taxonomically, it belongs to gymnodinidae and Siluriformes.
Oil fish is a general term for echinopus macrocephalus and Sparus heteropointus. Its appearance is somewhat similar to that of cod, but it is not a population. Because the fish sold in the market are all cut into pieces, it is difficult for ordinary consumers to distinguish them by appearance.
Oil fish contains wax fat that the human body can't digest, which is difficult for the human body to digest. Some people will accumulate in the rectum after eating, leading to diarrhea, gastrointestinal spasm and other discomfort. The commercial value of oily fish is not high, and it belongs to low-priced fish. Because of its high oil content, it is mainly used for refining industrial lubricants. ?
Since 2009, it has been reported in many cities in China that oily fish have been sold as cod, causing diarrhea among consumers. Because the mechanism of diarrhea caused by oily fish is not completely clear, many countries in Europe and America put oily fish on the list of prohibited foods, and many countries prohibit or do not recommend national edible fish.
The United States imposed an embargo on this kind of fish in the 1990s, and now it has been lifted, but the US Food and Drug Administration still opposes the import of oily fish and interstate trade. The Japanese Ministry of Health, Labor and Welfare lists oily fish as "poisonous fish" and prohibits its import.
In August, 2007, the China and Hongkong Food Safety Centers issued the Guidelines for the Labeling and Labeling of Oilfish/Cod, suggesting that all importers should adopt the common names "wax oil fish" and "oily fish" of Japanese Spinosaurus and Japanese Allosaurus, and other common names such as "Cod" should not be used to distinguish between industries and consumers.
References:
Baidu Encyclopedia-Lepidoptera Insects