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The Siberian sturgeons at Tropenhaus Frutigen originally came from Russian Siberia, and primarily live in fresh water. Siberian sturgeon can reach an age of up to 60 years, measure up to 2 metres in length and can weigh almost 200 kilograms. The elongated, spindle-shaped body is held by five rows of bony plates on the side of the body. The symmetrical tail is also an indication of the remarkable age of the sturgeon family, which has been in existence for more than 200 million years. It detects its food, mainly insect larvae, worms and small crustaceans with its four barbels (taste buds) and takes them up through its beak-shaped, extended mouth. Its colour is a uniform brown to greyish-black, while the underside is mottled yellow to grey. It can be found in almost all the rivers of Siberia and in Lake Baikal. Sturgeon are considered to be migratory fish, who swim upstream to spawn. The Siberian sturgeon only spawns every 2 to 5 years.

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