As we all know, cod is a very common fish in daily life, but also many mothers choose as a raw material for baby food, but there are many fish with the word cod in the trade name on the market, from flat cod to narrow cod, from silver cod to white cod, can you really distinguish these cod?
Today, The Crab Teacher will take you into the colorful world of "cod"
Cod Images from the web
<h1>Real cod:</h1>
Biologically speaking, true cod refers to the fish of the cod genus of the bony fish cod family, while our common cod cod species are only four species of fish, namely the Greenland cod (Gadus ogac), the Atlantic cod (Gadus morhua), the Pacific cod (Gadus macrocephalus), and the yellow-lined narrow cod (Theragra chalcogramma) that have just joined the cod family.
True cod Images are from the web
Of these four species of cod, the Greenland cod, Atlantic cod and Pacific cod are what we call true cod, and their biggest feature is the mustache on the chin (cute). Greenland cod, mainly caught north of the Atlantic Ocean north of 40° north latitude, up to the Arctic, because the production is small, so it is not common on the market; Atlantic cod, the trade name is usually Norwegian cod or Nordic cod, native to the cold waters of the North Atlantic from northern Europe to Canada and the eastern United States, but due to early overfishing, the current production of Atlantic cod is decreasing year by year, and even the Atlantic cod has been listed in the VU (vulnerable species) level of the IUCN (International Union for Conservation of Nature) Red List of Endangered Species, So in fact, it is not very common on the market; Pacific cod, commonly known as the bighead cod, is a kind of fish that can also be caught in China's waters, and is the most common in the market of real cod.
Cod Block Picture from the web
The next yellow-lined cod is "very" different from the other three real cod, and the biggest difference is that it does not have the classic moustache. The yellow-lined cod was only officially bid farewell to the genus in 2016 to join the genus, so the yellow-lined cod is a newcomer to the cod genus, but its extremely high yield makes it the most common cod in our lives.
The abundant production of yellow-lined cod is pictured from the network
Maybe the name of the yellow-lined cod is not very familiar to everyone, but its other names may be very familiar to everyone, the first name is the first name - Mingtai fish, which is the raw material for the spicy Mingtai fish fillets that we can buy korean characteristics. Another name is Alaskan Cod, what do you think? M's Wheat Cod and Double Layer Alaskan Cod Fort are both made with yellow-lined cod. In addition, the main raw materials for the various fish balls, crab sticks, fish tofu in the spicy hot pot and hot pot that we usually eat are all yellow line narrow cod surimi, so it can be said that the yellow line narrow cod is the most common kind of cod around us.
M double layer Alaskan Cod Fort Picture from the network
<h1>Those fish with cod in their names:</h1>
In fact, in daily life, in addition to the above kinds of real cod, you can also see a lot of fish with cod in their names, what are they?
The first is macrouridae and Albatrossia pectoralis, two types of codfish that are lower in price than cod, but because they have a cod in the name and taste ok, they are often cut and sold as cod pieces. However, although there is a suspicion of counterfeit cod, because the nutritional value is not bad, and it is harmless to people, as long as the pricing is reasonable, there is no big problem. However, because both species of cod are deep-sea fish, the appearance... emmmm...... Not so worthy of the audience, the long-tailed cod looks like this:
Macrouridae Image from the Web
The slender-scaled cod looks like this:
Albatrossia pectoralis Image from the Internet
Well~ after seeing the cheap fake cod, let's take a look at the higher price of "fake" cod:
The first is flat cod, sometimes we can also see some cod called Icelandic flat cod, generally cut into pieces to sell, but their appearance is very flat block, what is it? Its scientific name is Hippoglossus stenolepis, which is a flounder, also known as flounder, which is a large flounder, native to the North Pacific coast of the North American Northwest, but because of the low catch and the production of captive culture is also limited by breeding conditions and seedling technology, so the price continues to rise.
Hippoglossus stenolepis and Icelandic flat cod blocks Image from the web
Another major category is the same high price of silver cod, our common silver cod actually has two kinds, silver cod and French silver cod, these two fish, from the appearance of the difference is not much, but from a biological point of view is two completely different fish, silver cod is also called black cod, the scientific name is naked cover fish (Anoplopoma fimbria), the classification of bare top fish belongs to the genus of bare cover fish of the family Scorpidae. The main source of the bare cap fish is also in the northern Pacific Ocean, and most of the world's naked cover fish is processed off the Alaska coast. The largest consumer market for this fish is not the United States, but Japan, and 90% of the nearly 10,000 tons of bare cover fish caught in the United States every year are exported, of which 80% enter the Japanese market. The flesh of the bare lid fish is more delicate than that of cod, and it is a common product in high-end sushi restaurants. Although China is not a traditional consumer of bare-covered fish, imports have also risen rapidly in recent years, of which China imported 1,000 tons of Bare-covered Fish from Alaskan in 2011. To some extent, the naked cover fish, also known as the silver cod, has become the real image of cod in people's minds.
Anoplopoma fimbria and silver cod nuggets image from the web
And the French silver cod, often seen in high-end French restaurants, this fish actually has nothing to do with France, French silver cod scientific name Antarctic canine toothfish (Dissostichus eleginoides), taxonomically belongs to the genus of canine tooth antarctic fish in the family Antarctica of the order Perciformes. Antarctic canine toothfish is known for its bonelessness and fleshy white and crystal clear. The development of the fishery dates back to the late 1980s and early 1990s, when the U.S. and Norwegian longline fisheries first fished the species off the coasts of Argentina and the Falkland Islands in the southwest Atlantic. In view of the continued climb in the price of Antarctic canine toothfish to become a first-class food fish, known as "white gold", the profitability has led many countries to invest in the fishery, with catches peaking at 44 000 tonnes in 1995, with the main fishing grounds concentrated on Heard Island and the McDonald Islands. As for the origin of the name of the French silver cod, it is because the Antarctic canine toothfish was originally caught by French fishing boats in the French Antarctic waters, hence the name.
Antarctic canine toothfish (Dissostichus eleginoides) and French silver cod nuggets Image from the internet
<h1>The infamous fake cod – oil fish</h1>
Finally, let me tell you about the infamous false cod - oil fish, oil fish is a thorny snake mackerel (Ruvettus pretiosus) and Lepidocybium (Lepidocybium flavobrunneum), these two kinds of fish are classified as perch snake mackerel, oil fish is a deep-sea fish, oil fish weight, there are more than 40% of the wax ester, because the human body can not decompose and absorb wax esters, the intestine will be stimulated after diarrhea, discharge orange-yellow oil esters, but will not be poisoned. It is understood that oil fish is used for industrial purposes in foreign countries, and many countries do not recommend eating or require limited consumption. Although the wax ester contained in oil fish is not toxic, it is difficult for the human body to digest and accumulates in the rectum, so some people will cause diarrhea, gastrointestinal cramps and other discomfort after eating, and the oil may continue to flow out of the anus. After eating, patients develop symptoms as soon as 30 minutes, and most of them recover within two days.
Lepidocybium flavobrunneum image comes from the Internet
In China, in the past few years, there are often illegal merchants to cut the oil fish into pieces pretending to be cod pieces for sale, for the oil fish imitation cod blocks, the simplest way to distinguish is the rich oil ester overflowing on the surface of the fish blocks, and even yellow frozen oil droplets can be seen. Therefore, when buying cod, we must be careful not to fall into the trap.
Comparison of the appearance of oil fish blocks (left) and cod blocks (right) Image from the network
Finally, make a small summary to help you better distinguish these "cod"
In the description of the product, there is Atlantic, the word real cod, twenty or thirty, thirty or forty dollars a pound, basically is the Atlantic cod.
The product description has from Alaska, twenty-thirty-one pounds, and all of them are slender fish fillet-shaped, basically yellow-lined cod.
There are deep seas in the description of the product, the word cod, a dozen dollars and twenty dollars a pound, basically it is ugly, but the nutrition is not a lot, eat well strong cod, long-tailed cod.
These are cod in the broad sense of the order Cod.
The product description has Alaska, black cod, silver cod words, more than a hundred pounds, basically naked cover fish, commonly known as silver cod.
The product description has Antarctica, deep sea, French words, more than a hundred starting points, more than two hundred three hundred pounds, basically antarctic fish, commonly known as French silver cod
The product description has the word flat cod, which is a flat flounder, which belongs to flounder
These three kinds of cod-headed fish have nothing to do with cod.
Dragon cod, platinum gun, are all oil fish, oil fish sell oil fish price, no problem.
The impersonation of oil fish as silver cod is a consumer fraud and can be directly reported to the market supervision for investigation.
I hope you can better enjoy the delicious cod