is halibut healthy
1 Halibut is a very good source of magnesium, a natural calcium channel blocker, which lessens resistance and improves the flow of blood, oxygen and nutrients throughout the body. 2  Triglycerides, a kind of fat carried in bloodstream, can be lowered by two servings of omega-3-rich fish a week.hough most of the halibut is available fresh as steaks, fillets, or roasts, yet much halibut is frozen as of its availability. Halibut is rich in various nutrients such as selenium, magnesium, phosphorus potassium, vitamin B12, niacin, vitamin B6 and omega-3 essential fatty acids.