Any one of numerous species of large cartilaginous ganoid fishes belonging to Acipenser and allied genera of the family Acipenseridæ. They run up rivers to spawn, and are common on the coasts and in the large rivers and lakes of North America, Europe, and Asia. Caviar is prepared from the roe, and isinglass from the air bladder.

large primitive fishes valued for their flesh and roe; widely distributed in the North Temperate Zone

Sturgeon eggs, known commonly as caviar, are one of the world's most well recognized delicacies. Sturgeon live in rivers, coastal marine waters, and lakes in the Northern hemisphere and mature at a relatively late age, usually between 15 and 25 years, though they can live to be over 100 years old. Because of this late maturity, their populations are particularly vulnerable to overfishing. Because of declining natural populations, coupled with the continued popularity and profitability of caviar, sturgeon farming has gained more focus on the global scale.

Any of the large freshwater fishes of the family Acipenseridæ. Represented in the BWCA by the rare Lake Sturgeon ( Acipenser fulvescens Species of Special Concern to the Minnesota DNR.

Sturgeon is a term for a genus of fish (Acipenser) of which twenty-one species are known. One of the oldest genera of fish in existence, they are native to European, Asian, and North American waters.Sturgeons ranging from 8 to 11 feet (2.5 to 3.5 m) in length are by no means scarce, and some species grow to a much larger size.