Yellow eel is a kind of animal we are familiar with, they are delicious flesh, smooth taste, can be said to be a popular fish in recent years, but who would have thought that such an ingredient is actually poisonous in itself, and in the past it was also regarded as a pest in the field, what is going on? Aren't the yellow eels we eat now different from the ones we used to eat?
Although the yellow eel is a fish, it actually looks very much like a snake, and they like to live in the mud like loach, which makes many people mistake them for water snakes, often scary in the field, like the former rural rice fields and the silt by the river, if suddenly fertile, then there must be a lot of yellow eels inside. Although this yellow eel is slender and long, it looks harmless to humans and animals, but it is actually a ferocious carnivore, and they mainly use benthic animals as their main food, such as some water earthworms, tadpoles, small fish, etc. are their meals on the plate.
The most amazing thing about yellow eels is that they are denatural and have the characteristics of sexual reversal. Both are females from embryonic stage to initial sexual maturity. Yellow eels lay eggs after their initial sexual maturity, after which the ovaries gradually become spermatozoa. There is a time when the yellow eel is hermaphroditic during the sex transition. Generally, the yellow eel grows to about 24 cm and begins to reverse sexually, and at about 24-40 cm, a partial reversal is completed, that is, at this time, the yellow eel is hermaphroditic. When the yellow eel grows to more than 40 cm, it basically completes the sexual reversal and has become a male yellow eel.
Most of the breeding of yellow eels belongs to the pairing of offspring and parents, and also with the first two generations of male eels. However, in the absence of male eels, a small number of female eels in the same batch of yellow eels are reversed to male eels, and then breed offspring with the same group of female eels, which is the special feature of yellow eels from other animals.
So why is such a fish disliked and disliked by people? Yellow eels are natural hole-punching masters. They have no claws, but the body is thin and long, and very smooth, which allows them to quickly move in the mud, which will lead to a large amount of water loss in the rice field, once the water is lost, the nutrients will naturally be washed away with the water, so the yellow eel is a farmland pest.
The most important thing is that the blood of this fish is poisonous, and with the larger the size of the yellow eel, the more toxic it is in their body, if you eat the blood of these yellow eels, it will have a strong irritation to the mucous membranes of our human mouth and digestive tract, the most serious will make people numb, respiratory and circulatory failure, and eventually die.
So why has this poisonous animal become a delicacy on the tip of people's tongues again? Although these fish contain poison in the body, they are gone after the blood has been removed, and the high temperature can also inactivate the remaining toxicity in their bodies, which will not affect the consumption, and the medicinal value of yellow eels is also recorded in many ancient books.