The lake sturgeon (Acipenser fulvescens), also known as the rock sturgeon,[6] 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 lake sturgeon uses its elongated, spade-like snout to stir up the substrate and sediments on the beds of rivers and lakes to feed. Four sensory organs (barbels) hang near its mouth to help the sturgeon locate bottom-dwelling prey. Lake sturgeons can grow to a large size for freshwater fish, topping 7.25 ft (2.2 m) long and 240 lb (108 kg).[7]
^"Fossilworks: Acipenser fulvescens".
^"Fossilworks: Acipenser".
^Haxton, T.; Bruch, R. (2022). "Acipenser fulvescens". IUCN Red List of Threatened Species. 2022: e.T223A58134229. doi:10.2305/IUCN.UK.2022-1.RLTS.T223A58134229.en. Retrieved 3 October 2022.
^Froese, R.; Pauly, D. (2017). "Acipenseridae". FishBase version (02/2017). Archived from the original on 14 May 2017. Retrieved 18 May 2017.
^Van Der Laan, Richard; Eschmeyer, William N.; Fricke, Ronald (11 November 2014). "Family-group names of Recent fishes". Zootaxa. 3882 (1): 1–230. doi:10.11646/zootaxa.3882.1.1. PMID 25543675. S2CID 31014657.
^"Sturgeons". New York State Department of Conservation. Archived from the original on 29 August 2016. Retrieved 21 August 2016.
^"Record lake sturgeon caught in Wisconsin". 16 April 2012. Archived from the original on 23 April 2016. Retrieved 21 August 2016.
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