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Which North American sturgeon is the largest?
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chondrostean
Russian sturgeon (Acipenser gueldenstaedtii) swimming along the seafloor of the Black Sea.
The largest sturgeon in North America is the white sturgeon (Acipenser transmontanus). Found along the Pacific coast, this species is recognized as the largest freshwater fish in North America, capable of reaching lengths of 11 feet and weighing up to 820 kg (1,800 pounds).12