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.
At home and abroad, there have been reports of people losing their lives from eating puffer fish. Although, you have to risk your life to taste puffer fish, but due to the taste of puffer fish is very delicious. So, there are still numerous gluttonous people who try their best to eat puffer fish.
The most prevalent country in the world for eating blowfish is Japan. There are blowfish restaurants in all major cities in Japan. The chefs have to go through strict professional training. During the graduation exam, the chef has to eat the blowfish he or she cooked. As a result, some people who are not skilled enough to take the test run away. Pufferfish swim very slowly. This is because of the swimming muscles that most fish usually have in the back part of their body. The pufferfish has to paddle using its dorsal and caudal fins that sway from side to side. The teeth of the pufferfish are similar to those of the spiny dogfish. The teeth of the pufferfish are fused into a beak. The teeth on the upper and lower palate are used to crunch mollusks and coral. The pufferfish swallows the living parts of these creatures along with marine life such as crabs, worms, and barnacles. Pufferfish are distributed throughout the world and there are about 100 species. The pufferfish has a small mouth and round head, a dark brown back and white belly, and a large one up to 1 meter long, weighing about 10 kilograms, with eyes that are usually bluish-green, and can also change color automatically as the light changes. There are not many bones in the body, 'and the dorsal and ventral fins are very soft, but long two rows of sharp teeth, can bite clams, oysters, sea urchins and other food with hard shells.