Topic Reading-Vol.3387-7/20/2021

MEL School 三鷹


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Topic Reading-Vol.3387-7/20/2021

英語で世界を知ろう!Topic Reading

2021/07/20 Topic Reading-Vol.3387-7/20/2021

Dear MEL Topic Readers,

Giant goldfish problem in US lake prompts warning to pet owners

Native to East Asia, the goldfish is a small member of the carp. It was first bred for color in imperial China over 1,000 years ago. Now, it is one of the most popular aquarium fish that is normally kept as a pet in indoor aquariums. Goldfish usually stay about two to five centimeters in length if they are kept in small aquariums. However, when they are in wild outdoor ponds where they have enough food and room to grow, they can grow to over 30 centimeters. That is large enough to affect the ecosystem of the water. Also, they naturally become more aggressive in reproduction in nutritious and spacious conditions. Imagine that such predominantly big fish outnumber other species in a pond or lake whose ecosystem has been relatively stable. Yes, goldfish can grow larger, increase in number, and cause serious disruption to ecosystems. In fact, there are cases in North America and Europe where gigantic goldfish were found in waters in the wild. Such disaster wouldn’t have happened if humans hadn’t released their pet goldfish into wild waters.

Another natural disaster caused by humans.

Enjoy reading the article and seeing the photos to learn about the impact of inconsiderate human acts.

MEL School 三鷹
住所 〒180-0006 東京都武蔵野市中町2-3-5 IIHA武蔵野1階