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The shovelnose sturgeon (Scaphirhynchus platorynchus) [5] is the smallest species of freshwater sturgeon native to North America. It is often called hackleback , sand sturgeon , or switchtail . Switchtail refers to the long filament found on the upper lobe of the caudal fin (often broken off as adults).
Scaphirhynchus is a genus of sturgeons native to North America. All species in this genus are considered to be threatened with extinction or worse. [2] [3] [4] As of 2023, the pallid sturgeon (S. albus) [3] and the Alabama sturgeon (S. suttkusi) [4] are critically endangered according to the International Union for Conservation of Nature.
Download as PDF; Printable version; ... Alabama sturgeon; P. Pallid sturgeon; S. Shovelnose sturgeon This page ...
The Amu Darya sturgeon feeds on small fish and aquatic insect larvae, with large individuals being mostly piscivorous. [1] [5]Studies in the 1960s and 1970s showed that Amu Darya sturgeon reach maturity when 5–8 years old (slightly later in females than males), but in the 1990s the youngest mature individuals only were 4 years old, possibly due to environmental changes in their habitat. [7]
Fossil of the †chondrosteid †Strongylosteus hindenburgi, Tübingen Fossil of the †peipiaosteid †Yanosteus longidorsalis, MHNT The living polyodontid Polyodon spathula (American paddlefish) The living acipenserid Acipenser ruthenus (sterlet) The living acipenserid Pseudoscaphirhynchus kaufmanni (false shovelnose sturgeon)
The location of the State of Tennessee in the United States of America. Topographic map of Tennessee. The U.S. state of Tennessee has a uniquely diverse array of fresh-water fish species, owing to its large network of rivers and creeks, with major waterways in the state including the Mississippi River which forms its western border, the Tennessee River, the Cumberland River, and the Duck River.
The Syr Darya sturgeon (Pseudoscaphirhynchus fedtschenkoi), or Syr Darya shovelnose sturgeon, [1] is a species of fish in the family Acipenseridae. It is found in Kazakhstan, Tajikistan and Uzbekistan, where it is endemic to the Syr Darya River and, before its drainage, the Aral Sea .
Pseudoscaphirhynchus kaufmanni (Kessler, 1877) (Amu Darya sturgeon) Historically, the two species in the Amu Darya River were known to hybridize . [ 11 ] Unusually, P. fedtschenkoi occurs (or occurred) in three morphs that can be separated by the length of their snout and tail filament, and P. kaufmanni occurs in two morphs that can be ...