A genus of fish (Acipenser) of which 26 species are known. One of the oldest genera of fish in existence, they are native to European, Asian, and North American waters. Their ovaries, which are of large size, are prepared for caviar,
large primitive fishes valued for their flesh and roe; widely distributed in north temperate zone
large primitive fishes valued for their flesh and roe; widely distributed in the North Temperate Zone