“A century after it disappeared from Swedish waters, scientists in June embarked on a 10-year project to reintroduce the Atlantic sturgeon to a cleaned-up river in the west of the country.

In the opening act, 100 young sturgeons—transferred from a farm in Germany—were introduced into the waters of Gota alv…

The species lived in the river until the late 19th century, but gradually disappeared due to overfishing and pollution.

Today, the river is much cleaner and conditions are again right for the sturgeon.”

From Phys.org.