Large, primitive, bony fish found in temperate fresh and marine waters of the Northern Hemisphere. The ovaries of the female are the source of caviar
. It has five series of sharp-pointed scales along its sides, fleshy whiskers and a tapering, snout-like head. Family Acipenseridae; species Atlantic sturgeon (Acipenser sturio) length: to 3.3m (11ft), weight: to 272kg (600lb). The Eurasian freshwater sturgeon is also called beluga.
stur·geon / ˈstərjən/ •
n. a very large primitive fish (family Acipenseridae) with bony plates on the body. It occurs in temperate seas and rivers of the northern hemisphere, esp. central Eurasia, and is of commercial importance for its caviar and flesh.