Their closest relatives are the paddlefish. A sturgeon is a large primarily freshwater fish.
Sturgeon any of about 29 species of fishes of the family acipenseridae subclass chondrostei native to temperate waters of the northern hemisphere.
Sturgeons fish. Heavily fished for the female s valuable roe known as. These fish can grow to more than 7 feet. The lake sturgeon is the oldest and largest native fish species in north america s great lakes.
Russian sturgeons acipenser gueldenstaedtii are critically endangered and also economically important. The beluga b ə ˈ l uː ɡ ə or great sturgeon huso huso is a species of anadromous fish in the sturgeon family acipenseridae of order acipenseriformes it is found primarily in the caspian and black sea basins and formerly in the adriatic sea going on maximum size it is the eighth most massive living species of bony fish. While sturgeons used to be found in all large european rivers they now have nearly disappeared except for a few small populations.
It s not unusual to find one six feet long and 200 pounds. It looks a bit like a shark. Most species live in the ocean and ascend rivers to spawn in spring or summer.
A sturgeon may reach the age of about 50 to 100 years. Lake sturgeons can grow huge. Sturgeon is the common name for the 27 species of fish belonging to the family acipenseridae the earliest sturgeon fossils date to the late cretaceous and are descended from other earlier acipenseriform fishes who date back to the triassic period some 245 to 208 million years ago.
The lake sturgeon acipenser fulvescens also known as the rock sturgeon is a north american temperate freshwater fish one of about 25 species of sturgeon like other sturgeons this species is an evolutionarily ancient bottom feeder with a partly cartilaginous skeleton an overall streamlined shape and skin bearing rows of bony plates on its sides and back resembling an armored torpedo. The american paddlefish has a long sensitive snout and typically eats plankton and microscopic plants while the spiny backed russian sturgeon is known for devouring small fish and crustaceans. Acipenser huso scaphirhynchus and pseudoscaphirhynchus.
Several species provide caviar from eggs. Sturgeon adalah nama umum dari 26 spesies dalam famili acipenseridae termasuk genus acipenser huso scaphirhynchus dan pseudoscaphirhynchus sturgeon adalah famili ikan bertulang tertua yang masih hidup mereka hewan asli sungai danau dan pantai di subtropis iklim sedang dan subarktik sepanjang eurasia dan amerika utara mereka memiliki tubuh yang panjang dengan sisik yang sangat sedikit. They re the source of much of the world s caviar.
A sturgeon belongs to the most primitive among the bony fish. A few others are confined to fresh water. Researchers recognize at least 23 different species all of which they place in the taxonomic family acipenseridae.
It is a beautiful fish which has an almost prehistoric appearance. The family is grouped into four genera.
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