How did the new aquatic products become an "alien killer"?

(Shaanxi Radio and Television Station "First News" reporter Jin Long Luo Zhiyuan) During the Spring Festival, many people will buy some flowers, birds, fish and insects to beautify the living environment at home, but when choosing aquatic creatures as pets, you must pay attention to it, and do not buy back home alien species that threaten the ecological balance.

On the morning of February 22, the reporter saw in the Suzaku Flower Market in the southern suburbs of Xi'an City, many people came here to buy aquarium flowers, and in a store that sold ornamental fish, the reporter saw that in addition to the colorful tropical fish on sale, a table tennis-sized golden snail was also favored by customers. The boss told reporters that this snail is called "mysterious snail" or "golden snail", which is easy to raise, so it is particularly easy to sell.

Aquarium shop operator: "The color with purple is called purple snail, and the yellow color is called golden snail." ”

Reporter: "So why sell?" ”

Aquarium shop operator: "10 yuan a piece." ”

Reporter: "Well, isn't that good?" ”

Aquarium shop operator: "Good nourishment, good maintenance." ”

Reporter: "So why?" ”

Aquarium shop operator: "Because some of them eat dirty things." ”

Visiting a number of stores in the market, the reporter found that almost every ornamental fish store is selling "mysterious snails", and for where this snail comes from, the operator's answer is vague, but under the reporter's repeated questioning, a store told the truth.

Reporter: "Where is that?" ”

Aquarium shop operator: "That's all just from the south." ”

Reporter: "So that thing is Fushou snail?" ”

Aquarium shop operator: "Well, yes. ”

Reporter: "Fushou snail is equivalent to a variant?" ”

Aquarium shop operator: "It should be, all from the south." ”

Reporter: "Is this thing an alien species?" ”

Aquarium shop operator: "Exotic species. ”

Subsequently, the reporter sent the photo of the "mysterious snail" to Zhang Hongxing, an aquatic expert at the Shaanxi Wildlife Research Institute, and after identification, he told the reporter that the "mysterious snail" is indeed the infamous Fushou snail variant. He said that the Fushou snail is native to South America, originally introduced into China as a edible snail in the 80s of the last century, but did not expect that due to its strong viability and reproductive ability, it invaded the natural water bodies in many places in China, coupled with its wide eating habits, it has caused great harm to China's native species and agricultural production, and has been included in the list of the first batch of invasive alien species in China, becoming a key invasive alien species. At the same time, because Fushou snail will carry the parasite of "Guangzhou tube roundworm", once people mistakenly eat it, it will cause meningitis and other diseases, which can be said to be extremely harmful. Therefore, experts also remind everyone that it is best not to raise such snails as pets, and not to release them at will so as not to cause damage to the natural world.