Steelhead trout is not as high in omega-3 fatty acid content as fish like mackerel or tuna, but it is less likely to contain contaminants. Per serving, steelhead trout is comparable in omega-3 fatty acid content to halibut, pollock and smelt. 1  Monterey Bay Aquarium Seafood Watch: Rainbow Trout.  USDA National Nutrient Database for Standard Reference: Nutrient Data for 15241, Fish, Trout, Rainbow, Farmed, Cooked, Dry Heat.
Ob River. Written By: Ob River, river of central Russia. One of the greatest rivers of Asia, the Ob flows north and west across western Siberia in a twisting diagonal from its sources in the Altai Mountains to its outlet through the Gulf of Ob into the Kara Sea of the Arctic Ocean.
The Volga River's watershed (area of land drained by the river) is 532,821 square miles in size, and includes most of Western Russia. The Volga River's major tributaries are Kama River and Oka River. There are approximately 200 other tributaries that join the Volga River along its route. Major cities that the Volga River passes through include Astrakhan, Volgograd, Saratov, Samara, Ulyanovsk, Kazan, Nizhny Novgorod, Yaroslavi, and Tver.