Platanistoidea has four existing species inhabiting freshwater rivers and estuaries: three of them live in freshwater rivers; Another species, Plata puffer fish, lives in saltwater estuaries and coastal waters. However, in scientific classification, it is still classified as freshwater dolphin superfamily rather than dolphin family.

Due to the loss of habitat, human hunting and the extreme reduction of population, freshwater dolphins are facing the crisis of extinction. Moreover, many freshwater dolphins have poor eyesight-some are even blind, which will cause them to hit artificial objects, such as fishing boats and fishing nets, and get injured.

The puffer fish is poisonous, so don't be greedy.

In the spawning season of puffer fish, its toxicity is the strongest, and it is also the high incidence period of puffer fish poisoning. Tetrodotoxin is a highly toxic fish. Tetrodotoxin is an animal alkali with acid resistance and high temperature resistance, and it is one of the most toxic non-protein substances in nature.

After poisoning, there will be early symptoms such as slight numbness of mouth, lips, tongue tip and fingers, and then vomiting, walking and speech difficulties, and then blood pressure will drop rapidly and breathing will be difficult until consciousness disappears, breathing and heartbeat stop and death occurs.

After eating puffer fish by mistake, you should be sent to the hospital for vomiting and gastric lavage as soon as possible. When waiting for the doctor, you can stimulate the posterior pharyngeal wall with your fingers and chopsticks to induce vomiting and expel toxins from your body as soon as possible.

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