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.
1 The Ob proper is formed by the junction of the Biya and Katun rivers, in the foothills of the Siberian sector of the Altai, from which it has a course of 2,268 miles (3,650 km). 2  The West Siberian Plain covers about 85 percent of the Ob basin.