(Acipenser nudiventris), a fish of the family Acipenseridae. The body length reaches 2 m, and the weight, 30 kg or more. A migratory fish, the ship sturgeon is distributed in the basins of the Aral, Caspian, and Black seas. It enters rivers to spawn. There are spring and winter forms. Males attain sexual maturity at six to nine years of age, and females, at 12 to 14 years of age. Spawning is in March to May. Fecundity is 200,000 to 1.290 million eggs. The ship sturgeon feeds on mollusks and other aquatic invertebrates, as well as fish. A valuable commercial species, the ship sturgeon is in need of artificial breeding.
REFERENCESNikol’skii, G. V. Chastnaia ikhtiologiia, 3rd ed. Moscow, 1971.
Zhizn’ zhivotnykh, vol. 4, part 1. Moscow, 1971.