Salmon farming on the Tibetan Plateau? Recently, a rainbow trout that is not suitable for raw food and is often secretly rubbed by merchants called "freshwater salmon" has been generously said by a media outlet as "salmon".
First, let's look at the categories
Salmonids are subordinate to only salmonids, and salmonids have three subfamily salmonids, namely the subfamily Squid family - White Salmon, GuiBai Salmon, Northern Salmon Subfamily - Anchovy Subfamily - Slender-scaled Fish, Zheros, Red Spot Salmon, Anise Salmon, Pacific Salmon (Big Salmon), Trout
In fact, that is to say, salmon is the real salmon
Domestic freshwater aquaculture belongs to the genus Salmon, which is the freshwater rainbow trout
Chinese salmon was first proposed by Hong Kong and Taiwan as a transliteration of the English name salmon, because the English pronunciation of salmon is similar to sanwen, and the Chinese translation of salmon standard should be salmon or salmon. Salmon is not a fish taxonomic name, but a trade name for certain salmonids or salmon trout. Salmon refers to large, fleshy salmon such as Atlantic salmon and large salmon with orange-red color ((ง •̀_•́))
The salmon oncorhychus keta is a species of Pacific salmon, as is the rainbow trout, and its scientific name is Mackey hooked trout.
Trout refers to some of the three genera of Pacific salmon, trout (Atlantic salmon), and red-spotted salmon. Of course, this includes rainbow trout. So everyone says trout, salmon, that's it.
Most of the salmon imported in China in the early days came from northern Europe, mainly Norway. The annual import of chilled Atlantic salmon (not live Atlantic salmon) totals around 20,000 tons, so some people are accustomed to calling Norwegian salmon. Salmon and rainbow trout are two species, because of the success of early rainbow trout farming, some domestic merchants will call rainbow trout salmon, salmon market price is double the rainbow trout, more interest space. And some aquatic products will be fed with astranthrin, in order to make its flesh red, shoddy, so the domestic part of the rainbow trout impersonation salmon ...
Smaller rainbow trout
Rainbow trout
Real "salmon" Atlantic salmon
Cheaper price + reddish flesh color + thin sashimi thickness + narrow and clear fat texture + matte salmon sashimi on the surface of the meat is more likely to be rainbow trout.
In fact, rainbow trout is also a delicious fish, but it is not recommended to eat raw
Rainbow trout cannot be eaten raw! Freshwater fish and shrimp are usually not eaten raw, and they may carry a variety of parasites in their bodies, such as taenia macrosciolium, lung flukes, Chinese mycodystis (commonly known as liver flukes), jaw-mouth nematodes and so on. Eating freshwater aquatic products raw is more or less at risk of infection, and the soy sauce, wasabi sauce, and liquor served with it are simply not enough to kill these parasites. Neighboring Japan also has a habit of eating raw salmon, such as cherry salmon and rainbow trout, which have even become local specialties. Of course, becoming a specialty also carries the risk of contracting parasites, so some of these salmon are frozen in advance.
If viewed strictly, not only freshwater fish, but also marine fish that once lived in fresh and brackish water are not suitable for raw food, even wild salmon in the migratory stage. Wild salmon caught in the sea may also be infected with xenocephalus and taenia. The good news is that these parasite organisms have complex tissues and are intolerant to cryogenic freezing. Marine fish imported through formal channels are usually frozen at low temperatures (usually frozen for 15 hours at minus 35 degrees Celsius or frozen for a week at minus 23 degrees Celsius), so raw food is relatively safe. Captive salmon cages also have facilities to isolate birds, blocking the transmission of parasites through bird droppings, so the safety factor is higher. Wild salmon taste good, and farmed salmon is safer.