Swiss native fish in troubled waters

More than half of Switzerland's native fish species are threatened with extinction or are already extinct within the country's waters, a new assessment showed Wednesday.

Pets or threats? Goldfish might be harmful to biodiversity

Invasive species are one of the leading causes of global biodiversity loss, and the pet trade is responsible for a third of all aquatic invasive species. Pet owners releasing unwanted pets into the wild is a major problem. ...

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