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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).
Pallid sturgeon turn whiter as they age and younger specimens are easily confused with adult shovelnose sturgeon since they are similar in color. [17] Like the shovelnose sturgeon, their tails are heterocercal , with the top tail fin being longer than the bottom fin, though this is more pronounced in pallid sturgeon.
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.
Pallid sturgeon, Scaphirhynchus albus [84] Shovelnose sturgeon, Scaphirhynchus platorynchus [85] The three types of sturgeon native to Arkansas are uncommon, and two of the species are listed as endangered nationwide. The lake sturgeon is near the southern end of its range in Arkansas, more commonly found in the Upper Midwest. [86]
Science & Tech. Shopping. Sports
The Shovelnose sturgeon is the only sturgeon that has been recorded in Kansas since 1998. Family Acipenseridae (Sturgeons) Lake sturgeon (Acipenser fulvescens) (Ex) Pallid sturgeon (Scaphirhynchus albus) (Pe) Shovelnose sturgeon (Scaphirhynchus platorynchus) Family Polyodontidae (Paddlefish) American paddlefish (Polyodon spathula)
A bipartisan group of Wisconsin's congressional delegation has urged the U.S. Fish and Wildlife Service to exempt lake sturgeon in the state from any potential listing under the federal Endangered ...
The largest species, P. kaufmanni, reaches up to 75 cm (30 in) in total length (excluding tail filament), while the smallest, P. hermanni, only reaches 27.5 cm (10.8 in), making it the smallest member of the sturgeon family. [4] [9] P. kaufmanni has a long thin tail filament, P. hermanni lacks it, and it can be long or short in P. fedtschenkoi. [9]