Almost all kinds of puffer fish contain tetrodotoxin (TTX), which is a neurotoxin. If people eat 0.5 mg -3 mg of dolphin toxin, they will die. The toxin is heat-resistant, and cannot be destroyed at 100℃ for 8 hours, but only at 120℃ 1 hour, nor can it be destroyed by salting or sun exposure. Someone has tested the toxicity of tetrodotoxin, which is 1250 times that of sodium cyanide.

The most poisonous parts of puffer fish are ovary and liver, followed by kidney, blood, eyes, gills and skin. The toxicity of puffer fish is also related to its reproductive cycle. The puffer fish with eggs is the most toxic in late spring and early summer. This toxin can make people nervous paralysis, vomiting, cold limbs, and then stop heartbeat and breathing.

Life habits of puffer fish

1, bloating habit

A part of the puffer fish's stomach forms a special pouch, which is generally called an air bag or an air bag. It can inhale water and air, and can inflate the abdomen without the restraint of ribs and the strong contractility of the skin.

This habit is related to active self-defense and threatening enemy harm, and also has the function of pretending to be dead to avoid enemy harm.

Generally, the abdominal prickles are developed, the back is slightly worse, and the tail is almost absent. These skin thorns can increase the defensive effect when the abdomen expands.

2, drilling habits

The puffer fish often "sits" on the bottom of the sea with its belly down, shaking its body violently from side to side, pushing away the sand on the bottom of the sea, spreading the sand on its body with its tail and burying it in the sand, exposing its eyes and dorsal fins.

The above contents refer to Baidu Encyclopedia-Pufferfish.