Sturgeons are large primitive fishes of the Northern Hemisphere, used as a
food fish and valued as a source of caviar.
Some species live in saltwater, some ascend rivers to spawn, and some are
found in landlocked waters.
Sturgeons range from 2.5 to 3.5 m in length and can weigh up to 900 kg.
They are bottom-feeders. With their projecting wedgeshaped snout they stir up
the soft bottom, and by means of their sensitive barbels detect shells,
crustaceans and small fishes, on which they feed. Having no teeth, they are
unable to seize larger prey.
Siberian sturgeon (Acipenser baeri)
Source: Akwa Foto Acipenser
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