Dried puffer fish cannot be identified as toxic or not.

After the blowfish is made into dried fish, the characteristics of its species will become unrecognizable, and even experts are sometimes unable to distinguish which kind of blowfish it is, let alone identify the toxicity of the dried fish through the naked eye.

Consumers, in the purchase and consumption of puffer fish products must choose qualified merchants, legal puffer fish products in the package will be accompanied by a traceable two-dimensional code, and labeled with raw material bases and processing enterprise name and record number, processing date, shelf life, inspection and qualification information and other content. Among them, wild puffer fish, cultured live puffer fish and unprocessed whole fish of cultured puffer fish are currently prohibited for sale, and consumers should avoid buying them.

Toxicity

Almost all species of puffer fish contain tetrodotoxin (TTX), which is a neurotoxin that can kill a person who ingests tetrodotoxin 0.5mg-3mg. The toxin is heat-resistant, 100 ℃ for 8 hours are not destroyed, 120 ℃ for 1 hour to destroy, salt pickling, sunlight can not destroy the toxin. Some people have measured the toxicity of tetrodotoxin, and its toxicity is equivalent to 1250 times of sodium cyanide, a highly toxic drug.

The most toxic parts of puffer fish are ovaries and liver, followed by kidneys, blood, eyes, gills and skin. The toxicity level of the pufferfish is also related to its reproductive cycle. Pufferfish carrying eggs in late spring and early summer are the most toxic. The toxin can cause nerve paralysis, vomiting, chills in the limbs, and then cardiac and respiratory arrest.

The above references? People's Daily Online - Dried wild puffer fish sold illegally on the Internet, risky to consume, Baidu Encyclopedia - Fugu Fish