Scientists from the Canadian Department of Fisheries and Oceans have previously discovered several giant goldfish, and in order to find out why, they attached a tiny sounding device to the goldfish. Nick Mandrak, a professor of biology at the University of Toronto, Scarborough, found more than 20,000 goldfish in a rainwater pond outside Ontario. Native to Southeast Asia and becoming a serious problem in Canada, these goldfish are incredibly large, the largest reaching 19 pounds. Scientists explained that the environment of this rainwater pond is very harsh, and most fish cannot survive, but goldfish reproduce fast and can grow in a low-oxygen environment, and in this rainwater pond, nutrients from the sewer are also very abundant. Goldfish are “unrestricted” animals, and they can grow as long as they have enough food and space, the study said. By releasing hormones, they can also drive the goldfish around them to grow up together. Goldfish generally maintain their traits in aquaculture. Once they are released into the wild, they will immediately show their original shape, that is, they will become crucian carp. Since native crucian carp does not exist in foreign countries, the natural enemies of these fish are almost no.
[related_posts_by_tax taxonomies=”post_tag”]
The post Tens of thousands of “Big Mac goldfish” found in Canada: the heaviest can reach 19 pounds appeared first on Gamingsym.