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fish portal; Sturgeon ... may be extinct in the wild, and one (P. fedtschenkoi) ... Their average lifespan is 50 to 60 years, ...
The lake sturgeon (Acipenser fulvescens), also known as the rock sturgeon, [7] is a North American temperate freshwater fish, one of about 25 species of sturgeon.Like other sturgeons, this species is a bottom feeder and has a partly cartilaginous skeleton, an overall streamlined shape, and skin bearing rows of bony plates on the sides and back.
The fish has a distinctive yellowish-orange color, grows to a size of about 30 in (76 cm) long and 2 to 3 lb (0.9–1.4 kg), and is believed to have a lifespan of 12 to 20 years. Biologists have known of the fish since the 1950s or 1960s, but the large diversity of aquatic species in Alabama prevented formal identification until 1991.
Fishing for lake sturgeon in Minnesota, Wisconsin and Michigan is not a threat to the ancient species, the U.S. Fish and Wildlife Service (FWS) concluded in its decision not to list the giant fish ...
For several decades, no natural reproduction of pallid sturgeon was observed, since all the fish that had been captured were older specimens. In the late 1990s, young pallid sturgeon were discovered living in a restored riparian area of the lower Missouri River. This was the first documented example of wild spawned pallid sturgeon in 50 years. [20]
White sturgeon are the largest freshwater fish in North America. They look prehistoric, with bony, dinosaur-esque scales called scutes, and they get huge — some grow longer than 10 feet, and ...
A sub-adult beluga sturgeon swimming in an aquarium. Due to rampant overfishing, the average lifespan of beluga sturgeon is unknown, with no specimens living past their 56th year. However, the species is reportedly quite long-lived, being capable of surviving over 100 years in the wild. [15]
Wisconsin has among the highest populations of lake sturgeon. Lake sturgeon are one of the oldest fish species in North America and are native to at least two dozen states in the central, southern ...