n. 鲟鱼

[ noun ]
large primitive fishes valued for their flesh and roe; widely distributed in the North Temperate Zone
<noun.animal>

Sturgeon \Stur"geon\, n. [F. esturgeon, LL. sturio, sturgio,
OHG. sturjo, G. st["o]r; akin to AS. styria, styriga.]
(Zo["o]l.)
Any one of numerous species of large cartilaginous ganoid
fishes belonging to {Acipenser} and allied genera of the
family {Acipenserid[ae]}. They run up rivers to spawn, and
are common on the coasts and in the large rivers and lakes of
North America, Europe, and Asia. Caviar is prepared from the
roe, and isinglass from the air bladder.

Note: The common North American species are {Acipenser
sturio} of the Atlantic coast region, {Acipenser
transmontanus} of the Pacific coast, and {Acipenser
rubicundus} of the Mississippi River and its
tributaries. In Europe, the common species is
{Acipenser sturio}, and other well-known species are
the sterlet and the huso. The sturgeons are included in
the order {Chondrostei}. Their body is partially
covered by five rows of large, carinated, bony plates,
of which one row runs along the back. The tail is
heterocercal. The toothless and protrusile mouth is
beneath the head, and has four barbels in front.

{Shovel-nosed sturgeon}. (Zo["o]l.) See {Shovelnose}
(d) .