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 upper Ob runs from the junction of the Biya and Katun to the confluence of the Tom River, the middle Ob from the junction with the Tom to the Irtysh confluence, and the lower Ob from the junction with the Irtysh to the Gulf of Ob.