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Sterlet
The
sterlet
(
Acipenser ruthenus
) is a relatively small species of
sturgeon
from
Eurasia
native to large rivers that flow into the
Black Sea
,
Azov Sea
, and
Caspian Sea
, as well as rivers in
Siberia
as far east as
Yenisei
. Populations migrating between fresh and salt water (
anadromous
) have been
extirpated
.
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